All multicellular creatures interact with bacteria, but some have taken the relationship to another level with highly specialized structures that house, feed, and exploit the tiny organisms.
The broken-wing display, in which birds fake being wounded to protect their nests from predators, is found across the avian phylogenetic tree, a study finds.
Researchers overseeing the clinical trial for the first FDA-approved oral contraceptive claimed the drug gave the Puerto Rican participants power over their family planning. Critics claimed the women were exploited.