Some of the best known species on Earth may not be what they seem. Credit...Steve Holroyd/Alamy Supported by By Carl Zimmer Naturalists have been trying for centuries to catalog all of the species on ...

To biologists, a "species" is the fundamental unit of categorization for life on Earth and a key tool for protecting living creatures. When you purchase through links on our site, we may earn an ...

The question of what defines a species has vexed scientists across the ages, particularly in conservation, where decisions require a firm understanding of biodiversity. When you purchase through links ...

There are over 3,000 stick insect species, including a recently discovered species in Australia’s Wet Tropics. Learn more ...

Americans celebrated the 50th anniversary of the Endangered Species Act late last year, serving as a reminder of the 1,662 domestic and 638 foreign species it protects. The act is credited with saving ...

This year marks the 50th anniversary of the Endangered Species Act. It was the most comprehensive legislation for preserving species at risk of extinction and made the United States a global leader in ...

Scientists are revolutionizing how new marine species are described through the Ocean Species Discoveries initiative. Using advanced lab techniques, researchers recently unveiled 14 new species from ...

Over time, birds evolved the ability to sing, and with that came a burst of evolutionary change that continues today, with ...

In a suspected case of reverse evolution, wild tomatoes in the Galápagos have developed a defense mechanism that hasn’t been seen in millions of years.