This signals the U.S. will play a more passive role in international climate actions.
Satellite imagery shows how the complex has boomed since 2013.
The crack now stretches more than 100 miles in length.
Arctic sea ice is already at a record low. An oncoming storm will cause even more melt.
While some of the changes are typical for a new administration, others are concerning.
A pledge for inclusivity and protecting science from Trump has been signed by 14,000 scientists.
Climate change and fact-denying leaders spurred the clock 30 seconds forward.
NOAA said the images are the start of an age of “high-definition from the heavens.”
Scientists, basically: “Um, science is actually really important, you guys."