Roe decision sets off massive but uneven effects, experts say

The U.S. Supreme Court's decision Friday striking down the landmark 1973 Roe v. Wade and 1992 Planned Parenthood v. Casey rulings, foreshadowed in a rare leak last month, is likely to have wide, but varying, effects nationally, ...

Competition among worm sperm speeds up evolution

From elaborate dances to stunning plumage displays to dramatic head-butting, male animals have an array of ways to distinguish themselves from competitors while wooing a potential mate. But it's not their only chance to prove ...

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