Top Amazon deals: $6.99 electric toothbrush set, $7 Hanes sweatpants, women's bras up to 81% off

Amazon has super deals right now on women's bras, kids' clothing, blackout curtains, meat thermometer, men's & women's sweatpants and sweatshirts, 2026 planners, Neutrogena sunscreen & facial products ...
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Sharks are famous for fearsome teeth, but ocean acidification could make them weaker

PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those ...