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Ancient glaciers reshaped Earth’s surface and shifted ocean chemistry

Glaciers ‘bulldozed’ snowball Earth and changed ocean chemistry, paving the way for complex life, scientists say

By Mindy Weisberger, CNN (CNN) — More than half a billion years ago on a frigid, ice-covered Earth, glaciers stirred up ingredients for complex life by bulldozing land minerals and then depositing them in the ocean, according to a new study. Inch by inch, as massive glaciers crept over frozen land toward an ice-covered sea,

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‘No legitimate rationale’: Lawmakers raise concerns over what NASA won’t say about DOGE

By Jackie Wattles, CNN (CNN) — Some House Democratic lawmakers are raising “deep alarm” over Department of Government Efficiency’s interactions with NASA and potential conflicts of interest in a new letter released Friday. “The lack of transparency surrounding DOGE’s presence and activities within NASA is ominous and unacceptable,” reads the letter, which is signed by

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Birds-of-paradise are sending secret color signals invisible to human eyes, scientists say

By Mindy Weisberger, CNN (CNN) — Many types of birds — such as hummingbirds, peacocks and parrots — are vividly colorful, but birds-of-paradise are especially flamboyant with hues of emerald, lemon, cobalt and ruby. Now, research has revealed these stunning birds are also sending secret color signals that are invisible to human eyes. Plumage and

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Vast reserves of game-changing clean fuel may be hidden under mountain ranges, scientists find

By Laura Paddison, CNN (CNN) — Large reserves of white hydrogen may exist within mountain ranges, according to a new study, raising hopes this clean-burning gas can be extracted and supercharge efforts to tackle the climate crisis. White hydrogen has recently gained attention for its potential to help replace planet-heating fossil fuels. It was only

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