Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to Axios Closer for insights into the day’s business news and trends and why they matter

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Stay on top of the latest market trends

Subscribe to Axios Markets for the latest market trends and economic insights. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with Axios Sports. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Nashville news?

Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Columbus news?

Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Dallas news?

Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Baby blue whale nursing captured off the South Coast of Sri Lanka in 2015. Photo: Patrick Dykstra/Barcroft Images

Blue whales, which are the largest creatures on Earth, rely on their memory of productive foraging sites in order to seek out prey.

Why it matters: This insight, which comes from a new study in Proceedings of the National Academy of Sciences, helps explain how these oceanic behemoths can reach such massive sizes. It also identifies a vulnerability that could challenge the species as warming and acidifying waters cause fish to shift in abundance and range, making historical knowledge less useful to the emerging reality.

What they did: Researchers examined 10 years of movement data for 60 blue whales, each of which was tracked via satellite tracking tags, in the California Current Ecosystem, as well as oceanographic conditions involving the emergence of waves of krill, a small, shrimp-like crustacean that serves as a key food source for blue whales.

What they found: Researchers learned that whale migration more closely matches the 10-year average location of the spring green-up in this region compared to the contemporaneous conditions, which varied more significantly.

  • In other words, as blue whales migrate thousands of miles across the world's oceans, they seek out areas that are their historical best bets, as if consulting a self-taught guidebook to eating krill.
  • "These long-lived, highly intelligent animals are making movement decisions based on their expectations of where and when food will be available during their migrations," says Briana Abrahms, a research ecologist with NOAA and lead author of the new study, in a press release.

Why you'll hear about this again: Phenology, which is the study of life cycle events in the natural world, is already revealing sensitivities to climate change, with changes in the timing of flowering plants posing challenges for pollinators that arrive too early or late, for example.

What we don't know: The new study leaves unanswered the question of what will happen to blue whale populations if warming and acidifying ocean waters from climate change cause food availability to change dramatically, making a history-based hunting strategy less effective.

Go deeper

China's economic growth slows

A worker assembles heavy truck engines in Hangzhou in eastern China's Zhejiang Province, on Monday. Photo: Long We/Costfoto/Barcroft Media via Getty Images

China's economy grew 4.9% in the third quarter of 2021 compared with a year earlier, the country's National Bureau of Statistics announced Monday.

Why it matters: The gross domestic product growth in the July-September quarter in the world’s second-largest economy marked the "weakest pace since the third quarter of 2020 and slowing from 7.9% in the second quarter," Reuters notes.

2 hours ago - World

Former spy Steele defends controversial Trump Russia dossier

Former U.K. intelligence officer Christopher Steele arrives at the High Court in London in July 2020. Photo: Tolga Akmen/AFP via Getty Images

The author of the "Steele Dossier," containing unverified claims about former President Trump told ABC News he stands by his controversial report, according to excerpts from an upcoming documentary published Sunday.

Why it matters: Former U.K. intelligence officer Christopher Steele's dossier was used as part of former special counsel Robert Mueller's investigation into the Trump campaign's alleged links to Russia's government.

Ina Fried, author of Login
5 hours ago - Technology

Intel CEO sees making own chips as a matter of national security

Pat Gelsinger. Photo: Axios on HBO

Intel CEO Pat Gelsinger is putting the pressure on the U.S. government to help subsidize chip manufacturing, insisting the current reliance on plants in Taiwan and Korea as "geopolitically unstable."

Why it matters: There is bipartisan support for funding the domestic semiconductor industry, but Congress has yet to sign the check. The Senate has passed the CHIPS Act that includes $52 billion in semiconductor investment, but it has yet to pass the House.