Plus, researchers could hear adult howler monkeys calling back and forth with the infants, who would sometimes try to crawl away. Camera footage showed one occasion when an adult howler came and tried ...

Lichens on stone, those "still explosions" as the great American poet Elizabeth Bishop named them, remain unseen to most, ...

When under threat by, say, a crab, some sea cucumber species shoot out their guts—their intestines and respiratory tracts, ...