Illustration: Aïda Amer/Axios

Several climate models from top institutions around the globe are suddenly predicting the world will warm by 5°C (9°F) by 2100, a possible "nightmare scenario," and scientists aren't sure why, Bloomberg reports.

Why it matters: The 2015 Paris climate agreement set an agreed threshold to attempt to limit warming below 1.5°C (2.7°F). Should these newest projections turn out to be accurate, the Paris agreement's goals would already be well out of reach.

The state of play: These models have projected global warming with relative accuracy for the last half-century, and there has long been a general consensus that warming of 3°C (5.4°F) would produce catastrophic change.

  • Yes, but: Researchers don't yet agree on how to interpret the hotter results — based on supercomputer simulations of climate models — and some believe they may have "overshot."

The bottom line: These models inform how policymakers and politicians can plan for the future effects of climate change, so any unexpected and extreme change in their output would radically lessen the time that humanity would have to prepare.

Go deeper: Dissecting Trump's State of the Union energy claims

Go deeper

Updated 22 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Eniola Odetunde/Axios

  1. Global: Total confirmed cases as of 9 a.m. ET: 19,128,901 — Total deaths: 715,555— Total recoveries — 11,591,028Map.
  2. U.S.: Total confirmed cases as of 9 a.m. ET: 4,884,406 — Total deaths: 160,111 — Total recoveries: 1,598,624 — Total tests: 59,652,675Map.
  3. Politics: Trump floats executive action even if stimulus deal is reached.
  4. Business: U.S. economy adds 1.8 million jobs in July — Household debt and credit delinquencies dropped in Q2.
  5. Sports: The pandemic's impact on how sports are played.
  6. 1 🎮 thing: Video gaming growth soars.

Trump floats executive action even if stimulus deal is reached

Photo: Samuel Corum/Getty Images

The White House is finalizing a series of executive orders addressing key coronavirus stimulus priorities if negotiations with Congress fall apart, and it's leaving the door open for President Trump to use them even if a deal is reached that doesn't encompass all of his priorities, two administration officials tell Axios.

What we’re hearing: “I wouldn't be surprised that, if something gets left off the table, we’d be like ‘we can take this executive action too and be able to win on it anyway,’” one official said.

44 mins ago - Technology

TikTok responds to Trump executive order: "We are shocked"

Photo: Jakub Porzycki/NurPhoto via Getty Images

TikTok said Friday that it was "shocked" by President Trump's executive order that will ban Americans from dealing with ByteDance, its China-based owner, in 45 days.

Why it matters: TikTok argued that Trump's move "risks undermining global businesses' trust in the United States' commitment to the rule of law, which has served as a magnet for investment and spurred decades of American economic growth."