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Illustration: Sarah Grillo/Axios

A new simulator out today empowers readers to choose their own adventure when it comes to tackling climate change.

Why it matters: The tool, created by the Massachusetts Institute of Technology and think tank Climate Interactive, underscores the grand challenge of employing technologies and policies to tackle climate change.

What’s new: This simulator is the first of its kind designed for politicians and others who care about climate change and energy, but aren’t researchers accustomed to arcane models.

  • From this simulator, which is still quite detailed, we curated an even more simplified interactive (see below) presenting nine questions on everything from carbon dioxide prices to land management.
  • At the end, it shows how your choices affect annual greenhouse gas emissions, global temperature rise and energy costs over the next 80 years.

The intrigue: Think of it as choose your own adventure, climate and energy style. It’s like the books you may have read as children — but less fun and more complicated.

Expand chart
Data: MIT and Climate Interactive; Interactive: Naema Ahmed and Sarah Grillo/Axios

How it works: Let’s choose one “adventure,” the most aggressive where you choose to subsidize all clean energy technologies, pursue the most climate-friendly policies and enact a global carbon price over $200 a ton.

  • The results are an aggressive and gradual reduction in greenhouse gas emissions and a temperature rise of 3.1 degrees Fahrenheit.
  • That would keep the rise to lower than 3.6 degrees (2 degrees Celsius), which is a benchmark most scientists say Earth should stay below to limit the worst impacts of a warming world.

But, but, but: In this aggressive adventure, global energy costs rise sharply through the 2020s and then gradually decrease by 2100 to be lower than business as usual.

  • Energy costs include gasoline and electricity prices, but the modeling doesn’t offer more local costs for, say, the price of gasoline Americans would pay in 2029.
  • The metric used is gigajoule, an internationally recognized unit of energy (on a massive scale).
  • Many outcomes that drastically reduce emissions increase energy costs between 20-30% over the first decade, according to Andrew Jones, co-founder of Climate Interactive. In this most aggressive adventure, costs more than double initially.

The bottom line: The biggest upshot of the simulator shows that cutting emissions needs to be first about reducing the world’s use of fossil fuels, instead of merely ramping up cleaner forms of energy. Global energy demand keeps increasing, so wind and solar are being added on top of fossil fuels in most places around the world.

“It takes a long time for clean energy to displace the coal, oil and gas that is being planned. We need policies that more directly keep those fuels in the ground."
— Andrew Jones, co-founder, Climate Interactive

Go deeper: Why clean energy isn’t enough to tackle climate change

Editor's note: The interactive and content in this story was corrected to show the energy unit is a gigajoule (not an exajoule).

Go deeper

Updated 4 hours ago - World

Mexican President López Obrador tests positive for coronavirus

Mexico's President Andrés Manuel López Obrador during a press conference at National Palace in Mexico City, Mexico, on Wednesday. Photo: Ismael Rosas/Eyepix Group/Barcroft Media via Getty Images

Mexican President Andrés Manuel López Obrador announced Sunday evening that he's tested positive for COVID-19.

Driving the news: López Obrador tweeted that he has mild symptoms and is receiving medical treatment. "As always, I am optimistic," he added. "We will all move forward."

4 hours ago - Politics & Policy

Sarah Huckabee Sanders to run for governor of Arkansas

Sarah Huckabee Sanders at FOX News' studios in New York City in 2019. Photo: Steven Ferdman/Getty Images

Former White House press secretary Sarah Huckabee Sanders will announce Monday that she's running for governor of Arkansas.

The big picture: Sanders was touted as a contender after it was announced she was leaving the Trump administration in June 2019. Then-President Trump tweeted he hoped she would run for governor, adding "she would be fantastic." Sanders is "seen as leader in the polls" in the Republican state, notes the Washington Post's Josh Dawsey, who first reported the news.

Coronavirus has inflamed global inequality

Illustration: Aïda Amer/Axios

History will likely remember the pandemic as the "first time since records began that inequality rose in virtually every country on earth at the same time." That's the verdict from Oxfam's inequality report covering the year 2020 — a terrible year that hit the poorest, hardest across the planet.

Why it matters: The world's poorest were already in a race against time, facing down an existential risk in the form of global climate change. The coronavirus pandemic could set global poverty reduction back as much as a full decade, according to the World Bank.