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Comet 3I/Atlas doesn't need to be 'alien' to deserve a closer look, scientists say

By Katia Riddle

Published November 17, 2025 at 4:26 PM EST

There's a new celebrity in town and it's... a comet. Much of the attention has to do with an astrophysicist's grandiose suggestions that 3I/ATLAS could contain alien life. Other scientists disagree.

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For clues on how to evade cancer, some scientists look to the bowhead whale

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Where might we look for inspiration for new cancer therapies? Some researchers say the bowhead whale may offer clues.
Superfans turn out for U.S. Olympic Curling Team trials

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Ahead of the Winter Olympics in Milan in February, curling superfans turn out in Sioux Falls, S.D., for trials to determine which U.S. team will compete in "chess on ice" against the world.
Clinics that provide abortion in Maine face an onslaught

Selena Simmons-Duffin

Abortion is supported by three out of four Mainers, but a popular network of clinics that provides it alongside primary care is being shut out of Medicaid by the Trump administration.
Study finds human ancestors made tools continuously for 300,000 years

Henry Larson

Ailsa Chang speaks with David Braun, an archeologist, about his team's discovery of a site in Kenya that suggests human ancestors built tools continuously much earlier than previously thought.
DOJ records show hundreds of immigrants arrested in Chicago had no criminal histories

Sergio Martínez-Beltrán

DOJ records show that more than 600 arrests in Chicago's recent immigration enforcement operation may have violated a federal consent decree. And of those arrested, fewer than 3% had criminal records.