EditorialDangling nose hairs, spiky ear hairs — what gives? As men age, typically as they enter their 40s, 50s and 60s, testosterone’s effect on hair growth may start to become apparent in new, sometimes perplexing, ways.(Joyce Lee/The New York Times)
EditorialThe first Mars rocks collected by the Perseverance rover, which NASA hopes will be sent back to Earth for study in the next decade. (NASA/JPL-Caltech/ASU via The New York Times)
EditorialExperts are starting to untangle the biological underpinnings of this common yet perplexing disorder. What they’re finding could offer clues on how to treat irritable bowel syndrome, or IBS. (Gracia Lam/The New York Times)