More than 20 species make a nearly identical noise to warn nearby birds of brood parasites, a behavior that bridges the ...

Human innovation may alter how we see, hear or even perceive reality, but it will not undo the deepest truths of faith.

Sexual size differences are widespread in biology, yet the "how" behind them often remains vague. We asked a concrete ...

Genetic mirroring gives adoptees and foster youth reflections of self. Without it, identity feels like a blank mirror, fueling confusion, loss, and a lifelong search for belonging.