Human biology evolved for a world of movement, nature, and short bursts of stress—not the constant pressure of modern life.

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, ...

Most animals, including humans, carry an internal lunar clock, tuned to the 29.5-day rhythm of the Moon. It guides sleep, ...

Drawing on data from more than 100 mammal species, an international team of researchers examined the trade-off between living ...

There are plants that are neither green nor sexually reproductive, but precisely because of that they teach us a lot about what it means to be a ...

We conclude that brain states are shaped by local circuit mechanisms, large-scale connectivity and neuromodulation. A unified multiscale theory of cortical dynamics is relevant not only for ...

A new study reveals that red squirrels fed in city parks become pregnant 24 percent more often than forest females.

Artificial intelligence tools can now help choose the most promising embryos for in vitro fertilisation (IVF), although experts have warned of some ethical concerns.

Scientists trace the origins of human kissing back over 20 million years to ancient apes who first showed gentle ...

We made three attempts to capture a jaguar after arriving at Fazenda Bodoquena in Miranda, Mato Grosso do Sul state, on a ...

Picture a baby Brachiosaurus the size of a golden retriever, hunting for food with its siblings while dodging predators that ...

Although the science is unsettled, the White House has embraced core tenets of the ‘sperm count decline hypothesis.’ ...