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A look at the scientific breakthroughs changing the world, explorations in space and in worlds beyond our own and the threats posed to us by our own planet, both out of our control and of our own making.

Science

The KNP Complex Fire, which reached the western edge of Sequoia National Park Saturday night, has so far spared a group of giant sequoias, local authorities said on Sunday. 

Why it matters: The forest contains over 2,000 giant sequoias, including one that is considered the largest tree on Earth by volume. The giant trees are considered "national treasures," and protective measures, such as wrapping portions of the trees in fire-resistant foil, are in place to curb damage. 

The massive General Sherman Tree is 275 feet tall and over 36 feet in diameter at its base, according to the National Park Service.

The big picture: The KNP Complex Fire, which ignited by lightning earlier this month, has amassed a reach of about 21,777 acres and, as of yet, remains 0% contained, according to Sequoia and Kings Canyon National Parks. A red flag warning is in place.

More than 600 fire personnel have been deployed to the area. At this point, the fire is estimated to be contained around mid-October, per InciWeb.

California wildfire has, so far, missed group of giant sequoias

The KNP Complex Fire has amassed a reach of about 21,777 acres and, as of yet, is 0% contained.

A Sequoia tree wrapped in fire-resistant foil as the KNP Complex Fire reached Sequoia National Park. Photo: Patrick T.  Fallon/AFP via Getty Images

California wildfires

Extreme weather

SpaceX CEO Elon Musk pledged $50 million to St. Jude Children’s Research Hospital hours after the Inspiration4 crew splashed down on Saturday. 

Why it matters: The all-civilian spaceflight was created, in part, as a fundraiser for St. Jude to raise $200 million. The mission had received $100 million from billionaire Jared Isaacman, who purchased the flight, and raised an additional $60.2 million before Musk's contribution, according to CNBC.

The spaceflight launched on Wednesday and spent three days in orbit before returning to Earth. The crew members included Haley Arceneaux, a physician assistant at St. Jude who was treated by the hospital as a child. 

The fundraiser ultimately raised more than $210 million, per CNBC.

Elon Musk pledges $50 million toward Inspiration4 fundraiser for St. Jude

The all-civilian spaceflight was created, in part, as a fundraiser for St. Jude to raise $200 million.

Photo by Patrick Pleul/picture alliance via Getty Images

Photo: Patrick Pleul/picture alliance via Getty Images

Elon Musk

Firefighters in Sequoia National Park were working into the night after two wildfires merged to reach the Giant Forest on Saturday. 

Why it matters: This forest contains over 2,000 giant sequoias, including the General Sherman Tree — the world's largest tree by volume. Park officials wrapped the redwoods in foil last week as the Paradise and Colony Fires, now known as the KNP Complex Fire, neared. Protection efforts appeared to be working overnight.

A US Forest Service vehicle drives past the Sequoia National Park historic park entrance sign wrapped in fire resistant foil in California

A U.S. Forest Service vehicle at the Sequoia National Park historic park entrance sign, which has been wrapped in fire-resistant foil along Generals Highway. Photo: Patrick T. Fallon/AFP via Getty Images

What's happening: Park officials said in a statement just after 1am Sunday ET that the blaze had reached the grouping of sequoias known as the "Four Guardsmen," which mark the entrance to the Giant Forest.

But the statement from the  Sequoia and Kings Canyon National Parks added that "fuel removal efforts by firefighters, combined with structure wrap applied by crews to the base of the iconic sequoia trees, successfully protected these national treasures."

Threat level: The KNP Complex fire was expected to remain active throughout the night, per InciWeb. A red flag warning was in place through Sunday.

"Crews are preparing for changes and possible significant increases in fire activity," according to a statement from Sequoia and Kings Canyon National Parks earlier Saturday.

Zoom in: Lightning ignited both the Paradise and Colony Fires on Sept. 10.

John Wallace, an operations chief with the incident command team in charge of battling the wildfire, confirmed in a live-streamed update Saturday that "we now have one fire that grew together yesterday."

The blaze had burned across 17,857  acres and was 0% contained as of Saturday, per the Sequoia and Kings Canyon National Parks.

Zoom out: California has this year been hammered by multiple large wildfires, and this mega-blaze is among 10 large fires burning in the state. 73 large blazes are burning across the U.S., according to the National Interagency Fire Center.

A UN report found last month that there's an "unequivocal" connection between human-caused global warming and extreme weather events.

Flashback: Last year's Castle Fire that raged across the Sierra Nevada destroyed 10% to 14% of Earth's mature redwood trees, a draft report from National Park Service scientists found in June.

 Editor's note: This article has been updated with more details on the fire and further context. 

Huge wildfire reaches edge of Sequoia National Park

Prevention efforts, including wrapping trees in foil, have so far "successfully protected these national treasures," officials said today.

A plume of smoke and flames rise into the air as the fire burns towards Moro Rock during the KNP Complex fire in the Sequoia National Park near Three Rivers, California on September 18

A plume of smoke and flames rises in the KNP Complex fire in the Sequoia National Park near Three Rivers, California, on Saturday. Photo: Patrick T. Fallon/AFP via Getty Images

Energy & Environment

Axios Space

The all-civilian Inspiration4 crew is back on Earth after their three-day mission in orbit. 

The big picture: The launch and landing of this fully amateur, private space crew marks a changing of the guard from spaceflight being a largely government-led venture to being under the purview of private companies.

What's happening: Inspiration4 launched on Wednesday and came back in for a splashdown within their SpaceX Dragon capsule in the Atlantic Ocean off the Florida coast on Saturday.

"On behalf of SpaceX, welcome back to planet Earth," Kris Young, SpaceX's space operations director, said at splashdown.

"Thanks so much, SpaceX," commander of the mission Jared Isaacman said upon landing. "It was a heck of a ride for us." 

Catch up quick: The mission was thought up by billionaire entrepreneur  Isaacman. 

Chris Sembroski was chosen as part of a raffle that anyone could enter, while Hayley Arceneaux — a physician assistant at St. Jude Children's Research Hospital who was treated by the hospital as a child — was chosen by her employer to fly.

Sian Proctor was selected as part of a reality TV-style competition for entrepreneurs and became the first Black woman to serve as the pilot of a spacecraft. 

During their time in space, the four crew members spoke to their families, some of the kids at St. Jude, Bono and Tom Cruise as well as performed science experiments and gazed out of the cupola, a huge bubble window flown for the first time on this mission.

The bottom line: Inspiration4's successful launch and landing mark a huge win for SpaceX as the company works to bring about a future where millions of people are living off-Earth.

🎧 Go deeper: Listen to the new season of Axios' How It Happened: The Next Astronauts going inside Inspiration4 here.

Private companies are changing who gets to go to space

Wrestling with the risks of private missions to space

All-civilian Inspiration4 is back on Earth after flight to space

The successful SpaceX endeavor marks the first all-civilian flight to orbit in history.

The Inspiration4 crew on the back back down to Earth after their flight in space.

A side-by-side of the Inspiration4 crew and a shot of their capsule on the way back to Earth. Photo: SpaceX

Space

Axios Generate

Heat is typically the No. 1 weather-related killer in the U.S. — but depending on the neighborhood, some city residents experience cooler, more manageable temperatures than others.   

Why it matters: All cities trap heat, with their darkly colored asphalt and energy absorbent buildings — a phenomenon known as the Urban Heat Island effect. However, within these heat islands, some areas are consistently hotter. 

They are often the same redlined neighborhoods where historically, banks refused to underwrite mortgages and loans and insurance companies refused coverage based on race and ethnicity, Jeremy Hoffman, a climate scientist at the Science Museum of Virginia, tells Axios. 

Driving the news: When a heat wave struck the Pacific Northwest in June, possibly killing more than 600 people, Portland and Seattle residents sweltered through triple-digit temperatures. 

Wealthier areas had more shade to protect people from the sun and prevent solar radiation from reaching dark sidewalks, keeping those areas cooler. This may have meant the difference between life and death, especially because it lowered temperatures at night and allowed people to recover. 

With global warming leading to more intense and frequent heat waves, there is growing urgency for scientists and policymakers to address heat exposure disparities within communities.

The big picture: Researchers using grants from the National Oceanic and Atmospheric Administration have mapped the urban heat islands of dozens of major U.S. cities and found that the effects of redlining stand out.

Poorer neighborhoods with more Black, Latino, Asian or Native American residents tend to have fewer trees and parks, as well as fewer neighborhood interventions to reduce temperatures outside and inside homes, such as white and green roof projects. 

Details: One study published last year in Climate found that land surface temperatures in formerly redlined areas are about 2.6°C, or 4.7°F, warmer than other locations in the same cities. 

“People that are living in these areas are experiencing a very different day-to-day environmental experience than people living in the same cities just a few blocks away,” Hoffman says.

How it works: Vivek Shandas, a professor at Portland State University, views heat as an “insidious climate justice issue.” He says heat exposure has been "pre-baked" into communities due to legacy policies on infrastructure, housing and health care. 

Between the lines: Jane Gilbert is the first chief heat officer of any U.S. metro area. She serves Miami-Dade County, Florida, which includes the city of Miami, and has been examining the heat exposure differences there.

In a trend due in large part to human-caused climate change, since 1970 Miami has seen a 79-day increase in the number of days each year with temperatures above 90°F, according to data from the nonprofit science and journalism group Climate Central.

Gilbert says the heat-related threat that keeps her up at night is a large-scale power outage, or a prolonged power outage following a hurricane strike. 

Case in point: Heat turned deadly this year in New Orleans following Hurricane Ida.

What's next: Miami-Dade County is looking for ways to address disparities in heat exposure within communities.

Gilbert says she is working with the National Weather Service to try to lower their thresholds for issuing heat alerts that trigger things like opening cooling shelters. 

The urban heat island effect means that some neighborhoods exceed warning criteria on days when no warnings are issued, Gilbert says, primarily because the temperature at official measuring stations is cooler.

Miami-Dade County is working to increase the tree canopy in poorer neighborhoods to provide more shade, and they’re also pursuing weatherization and other efficiency retrofits to reduce energy consumption at home. This is part of an effort to enable more residents to afford air conditioning. 

In addition, the county is training responders to check on vulnerable residents during heat waves. 

Formerly redlined areas now are often urban heat islands

One study found temperatures in formerly redlined areas to be about 4.7°F warmer than other locations.

Illustration of city buildings with an abstract sun. 

Deep Dive: Hard Truths – Environment

Latin America and Latinos

President Biden has made the COVID-19 crisis and a post-Trump return to national unity and traditional democratic ideals his top priorities. From vaccinations to stimulus to schools, Biden is seeking bipartisan compromise while showing a willingness to use executive authority and bare Democratic majorities in the U.S. House and Senate to implement his policies. Republican leaders are navigating deep party divisions over if and how to move beyond former President Trump.

Politics & Policy

After a record economic expansion, the coronavirus pandemic sent the U.S. economy into a recession as unemployment soared to staggering heights. The country now faces urgent questions about how much stimulus is needed for reeling consumers and businesses, and what a recovery might look like.

Economy & Business

The increasing number of extreme weather incidents is spurring calls from emergency services workers and state and local officials for better public health mapping to identify and assist people at risk from environmental disasters. 

Why it matters: People of color, especially Black Americans, have been disproportionately affected by environmental hazards and are more likely to die of environmental causes now and in the future.

Advocates argue deaths can be reduced by identifying the location of people who have health problems or are homeless, elderly or isolated. Mapping can also help determine if people are located near unstable infrastructures, such as old buildings or power plants, that increase their risk of injury or illness due to air pollution or in the event of a natural disaster.

In the U.S., people of color particularly are found to be more vulnerable to heat waves, extreme weather and labor market dislocations following a climate event, several studies show.

State of play: Local, state and federal funding to address environmental concerns raised by communities of different races and ethnicities is often not dispersed equally once disasters occur, per the American Public Health Association. 

Counties with a majority of white residents saw an increase in average wealth after natural disasters due to reinvestment or better insurance coverage options, whereas counties with more people of color saw decreasing wealth, according to a study done by Rice University and the University of Pittsburgh. 

White families living in areas with about $10 billion in damages saw a wealth increase of nearly $126,000 from 1999-2003 versus Black families, who saw a wealth decrease of about $27,000, the study found. 

What's happening: With a state- or countywide mapping system — what some are also calling environmental justice mapping — nonprofits, emergency services like fire and EMT workers, public health employees and social workers can knock on doors to check on at-risk residents and target warning messages ahead of evacuations or anticipated weather patterns.

More lives could have been saved with public health mapping when the Pacific Northwest had record-breaking heat waves this past summer, Randy Lauer, vice president of operations for Northwest at Global Medical Response, which helps coordinate regional emergency response, tells Axios.

What to watch: Effective policies and programs are crucial to improving this, the APHA says, as communities of color are bound to face more and more challenges brought by climate change. 

Some members of Congress in recent weeks have been pushing for mapping and data collection to be included in proposed legislation. Problems cannot be adequately solved if the U.S. cannot identify the demographic factors, environmental burdens, socioeconomic conditions and public health concerns in communities of color, the bill says. 

Several proposals in Senate committees call for including $100 million for state, local and Tribal air agencies to partner with local nonprofit organizations or air quality data providers to identify hotspots for pollutants, publish data and build online mapping tools for communities of color to better protect themselves. 

Some states, like Washington, did dedicate some resources to map populations but are still working to develop adequate community outreach and better user-friendly dashboards.

The bottom line: Discriminatory practices and policies paired with higher pollution burdens and less access to health care have put people of color at the heart of environmental racism.

Public health mapping key to saving lives in disasters

Advocates argue deaths could be reduced by identifying where vulnerable people are located.

Illustration of hands holding a clipboard with a map.

Data: EPA; Note: Relative effects at 2°C warming above 1986-2005 average and 50 centimeters of sea level rise;  Chart: Sara Wise/Axios

A growing environmental threat to communities of color — particularly Black Americans, Hispanic Americans and Native Americans — is the damage some are likely to suffer because of climate change in the coming years.

The big picture: This visual is based on an EPA analysis released this month that explores how warming and rising seas could make life especially miserable for people of color based on where they currently live in the lower 48 states.

Think extreme heat, flooding and childhood asthma from air pollution — plus hours on end where people can't work because it's just too hot.  

How it works: The visual shows the predictions of what people would experience if global temperatures increase by 2°C (or 3.6°F) compared to the 1986-2005 average and sea levels rise by 50 centimeters (or about 19.7 inches) relative to 2000. 

Climate change could hit people of color especially hard

Warming and rising seas could make life particularly miserable for people of color.

Austin

Axios Austin

Data: First Street Foundation; Chart: Kavya Beheraj/Axios

A national study out earlier this year from the nonprofit First Street Foundation supports what experts have long believed: The National Flood Insurance Program undercharges for flood insurance in certain areas, making it cheaper and easier for people to live in dangerous places if they’re willing to take the risk.

The big picture: The group found 4.2 million properties across the country face major flood risk and pay too little in flood insurance; a quarter of those were in Florida. And the data show the risk is racially lopsided.

In more than two-thirds of states, areas with more minority residents also have a greater share of unmapped flood risk than the statewide average, the New York Times reported last year.

Zoom in: For decades, Austin, Texas, has spent tens of millions of dollars buying and demolishing homes in the working class, heavily Latino area along Onion Creek after finding that flood maps for the area underestimated actual risk.

In 2013, floods hit Austin in the early hours of Halloween, killing at least three people and damaging more than 500 homes. Some parts of the city received nearly 10 inches of rain in 24 hours.

Other major floods damaged or destroyed homes in 1981, 1998, 2001 and 2015.

What they're saying: “In my community it’s a matter of if, not when, the next big flood happens,” Vanessa Fuentes, a City Council member representing the Onion Creek area, tells Axios.

Flashback: In the wake of the 2013 flooding, an analysis by the Austin American-Statesman found that the city paid on average $191,000 a piece for more than 100 properties around Onion Creek between 2014 and 2015.

That included relocation payments aimed at helping homeowners buy comparable homes in less-flood-prone areas.

Most of the houses the city purchased were subsequently demolished.

Yes, but: Many homeowners in the area have bemoaned how the buyout packages have torn the neighborhood fabric. 

“We would like to preserve our neighborhood, and we're concerned that they're destroying homes that, if they do true mitigation, would otherwise be livable,” Mike Rodriguez, president of Onion Creek Homeowners Association, told KVUE in 2019.

State of play: At the end of September, the Austin City Council will likely vote to adopt a climate equity plan, which will accelerate city efforts to tamp down carbon emissions because of what it describes as the “unjust impacts” of climate change on communities of color and low-income people. 

That follows an April city-staff report that recommended a host of flood mitigation strategies, including the creation of a home repair program to help low- and moderate-income households make small-scale floodproofing improvements on their properties, such as building drainage swales.

What’s next: Climate scientists forecast more frequent, harsher storms — and more flooding — in Central Texas, an area of the country known as Flash Flood Alley.

The actuaries appear to agree: Texas historically has among the highest insurance rates in the country because of weather-related risks ranging from tornadoes to hurricanes. Rates for the average home in Texas have increased every year since 2012, by as much as 12.9% in a single year, per Texas Department of Insurance data.

“We typically lead the nation in hail claims, have 367 miles of coastline, and most of our state’s metro areas are either on the coast or in Flash Flood Alley,” Ben Gonzalez, a spokesperson for the Texas Department of Insurance, told Axios. 

Plus: While Texas doesn't require homeowners to purchase flood insurance, properties in a high-risk flood zone typically need coverage as a condition of a bank loan. 

“Flood insurance can cost $400 to $500 a year,” Fuentes told Axios, “and that’s a huge new cost for working-class families.”

The bottom line: Fuentes in January, referring to the earlier Onion Creek floods, said "it is essential that this issue remains a priority in order to prevent further loss of life and displacement, which unfortunately disproportionately affects the most vulnerable members of our community.”

Fuentes says she hears from new residents moving to fast-growing Austin who are amazed at all the undeveloped green space by Onion Creek. 

But she says that natural beauty hides the area's dark history. “Hundreds of families were displaced, homes were demolished and some people died,” Fuentes says.

Communities of color bear disproportionate flood risk

4.2 million properties across the country face major flood risk, which falls disproportionately on

On a cool July dawn, 11-year-old Henry Herrera and his father were outside their home in Tularosa, New Mexico, when they saw a bright light and heard the boom of what turned out to be the world's first atomic bomb test. 

Hours later, their home was covered in ash.

Why it matters: Three-quarters of a century later, Hispanic and Mescalero Apache families and descendants of those living near the Trinity Test are dealing with rare cancers that have devastated nearly four generations, while the federal government ignored, dismissed and forgot them.

Those families, mainly Latino and Native American, now want acknowledgment and compensation like white families near U.S. nuclear testing sites in other states. But time is running out. 

The big picture: "The military didn't tell us a damn thing. Not even, 'I'm sorry.' They didn't hurt nothing but a bunch of Mexicans who lived there, I guess,"  Herrera, now 87, tells Axios.

No president, from Harry Truman to Joe Biden, has apologized to residents near the Trinity Test or openly advocated for New Mexico to be included in the Radiation Exposure Compensation Act.

Details: On July 16, 1945, the U.S. Army detonated an atomic bomb developed through the Manhattan Project by scientists at the then-secret community of Los Alamos.

The bomb exploded at 5:29 a.m. in a desert valley called Jornada del Muerto, or Journey of the Dead. 

Its thunderous roar during the rainy season knocked people from breakfast tables in Tularosa and sent others on the Mescalero Apache reservation into hiding.

At first, the blast's radioactive cloud blew away from Hispanic villages and Indigenous communities, but New Mexico's swirling winds brought it back, covering those communities with debris.

Henry Herrera describes seeing the Trinity Test explosion from his parents' Tularosa, N.M. home in 1945.

Henry Herrera describes seeing the Trinity Test explosion from his parents' Tularosa home in 1945. Photo: Russell Contreras/Axios

What they're saying: "My mother had just hung her white clothes on the clothesline, and god dang! You should have seen the god dang dust that rolled all over town. She was so mad that she had to wash them all over again," Herrera remembers. 

What people didn't know at the time is that the clothes became radioactive. The family kept using them for years, he says.

Curious residents also went to ground zero to picnic and took artifacts, including the radioactive green glass known as trinitite.

Some even took contaminated pieces of cloth left behind to make christening dresses.

A black and white image of the mushroom cloud from the Trinity test in New Mexico.

The Trinity Test in New Mexico. Photo: Corbis via Getty Images

The intrigue: Only after the U.S. dropped atomic bombs about a month later on the Japanese cities of Hiroshima and Nagasaki would southern New Mexico residents learn any details about the Trinity Test.

Residents over the years developed rare forms of cancer, holding bake sales to raise money for treatment, not knowing what was happening. 

Total health care costs and money lost for people living in the affected four New Mexico counties are unknown.

Herrera had his jaw reconstructed after suffering from mouth cancer. His family and other residents believe such cancers are related to the atomic bomb test.

Don't forget: It wasn't just the first bomb that was a concern. During the Cold War, the U.S. government stepped up its production of nuclear weapons by mining uranium all over the Navajo Nation.

There, the birth rate of the sheep dramatically dropped and surviving lambs struggled to walk. Other lambs were born without eyes. 

Navajo uranium miners also developed cancer and grappled with health care bills. Many ventured into the desert to die alone, since it's considered a bad omen to die at home.

There are over 500 abandoned uranium mines today on the Navajo Nation, according to the EPA. Homes and water sources near those now-closed mines have elevated levels of radiation.

A Navajo woman feeds sheep in a shack on the Navajo Nation in 2005.

A Navajo woman feeds sheep in a shack on the Navajo Nation in 2005. Photo: Gail Fisher/Los Angeles Times via Getty Images

What's next: Tina Cordova, co-founder of the Tularosa Basin Downwinders Consortium that advocates for families affected by the Trinity Test, tells Axios that residents of southern New Mexico are hopeful about finally being included in the Radiation Exposure Compensation Act. 

RECA is a federal law originally passed by Congress in 1990 to award financial reparations to Nevada Test Site downwinders and later uranium workers in other states.

The act is scheduled to sunset on July 15, 2022, but the Hispanic village of Tularosa and the Mescalero Apache Reservation were never included in the law because Trinity Test downwinders were left out. 

The Senate this year is expected to consider a bill sponsored by Sen. Mike Crapo (R-Idaho) to extend the law and possibly include southern New Mexico residents in addition to Native American uranium miners and some Idaho residents near other radioactive sites, Cordova adds. 

The bottom line: "It begs the question: Why were people near the Trinity Test left out of the Radiation Exposure Compensation Act?" Cordova says. "Many of them were people of color."

Henry Herrera and the legacy of the Trinity Test

Residents near the Trinity Test say they suffered from lasting health damages for decades and no one seemed to care.

Photo illustration: Aïda Amer. Photos: Russell Contreras/Axios, Fotosearch/Getty Images

Most of us take the quality of the air we breathe and the water we drink for granted. But for people of color, the environment is often the cause of chronic, sometimes fatal health issues.

Race and the environment in America

For people of color, the environment is often the cause of chronic, sometimes fatal health issues.

Illustration of a collage with images of the earth and industrial chimneys

The all-civilian SpaceX crew called actor Tom Cruise on Friday, giving him a glimpse into their experience in orbit two days after the successful Inspiration4 launch.

Don't forget: NASA announced last year that it would work with Cruise on a film aboard the International Space Station — though it's unclear where that currently stands. 

Russia is racing to beat the U.S. with plans to send an actress and film director next month, per the New York Times.

Driving the news: Inspiration4 tweeted news of the call with a quote from Cruise's 1986 aviation film "Top Gun." 

"Maverick, you can be our wingman anytime," the tweet read.

The big picture: The civilian crew is expected to live in space until Saturday, and have largely spent their time performing experiments and flying sentimental items to orbit.

Go deeper... How it Happened Season Two: The Next Astronauts

Inspiration4's all-civilian crew calls Tom Cruise from space

NASA announced last year that it would work with Cruise on a film aboard the International Space Station.

Photo of Tom Cruise in a navy blue suit and aviator sunglasses walking outside 

Photo: Neil Mockford/GC Images via Getty Images

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