Science news this week March 15, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

WASHINGTON, D.C. — On a sunny afternoon steps from the Lincoln Memorial, crowds of protesters gathered to stand up for science. Wispy clouds streaked across blue skies as people chanted ...

The emergence of ultra-processed foods is closely connected to the commercialization of food systems. Limiting their unrestrained growth may be critical to improving human and planetary health.