What are some animals that give birth to huge numbers of offspring at once?” (Watch a female sea urchin produce millions of eggs.) The mola, or ocean sunfish, looks like an animal cracker someone bit ...

A global study reveals sexual selection influences life expectancy differences between sexes in mammals and birds, reshaping ...

Researchers who analyzed data from zoo animals found that it is not only genetics, but mating pressures that may determine ...

Bird populations are in rapid decline across North America. While climate change is just one of the many factors influencing North American birds, its effects are significant and can interact with ...

Tree swallows in polluted U.S. regions are accumulating high levels of “forever chemicals.” These durable pollutants, used in firefighting foams and consumer products, are found everywhere from soil ...

On islands, many plants rely on animals such as birds, bats and reptiles to disperse their seeds and help them grow in new ...