The transition from water to land is a question that still intrigues scientists. Those ancient organisms would have needed to ...

Researchers have shed new light on the features that enable tree-dwelling mammals to move effectively through their environments, providing insights into the evolution of the distinct upright postures ...

Conservation of bird species has been a major concern for decades. However, the rate of species loss is accelerating due to ...

From her studies, Fiona concluded that the relative absence of creepy-crawlies was the biggest reason chimpanzees build nests ...

Frontmatter -- CONTENTS -- PREFACE AND NOTES -- ACKNOWLEDGMENTS -- 1. Before Animals -- 2. Phylogenetics and the Base of the Animal Tree of Life -- 3. Ctenophora -- 4 ...

A new study reveals how squid and cuttlefish began in the deep sea and survived Earth’s biggest extinction to thrive ...

Evolution is often perceived as an incredibly slow, natural process driven by environmental pressures over millennia. That characterization certainly holds true, but humans have also repeatedly ...

A new study argues that human culture — including religion, politics and war — influences how wildlife evolves in cities. In Los Angeles, factors such as policing, zoning, and local values and ...

A pattern emerged. We discovered that eyes and light-sensing cells are consistently found at two separate locations: paired ...

A host of tree mammal species, including opossums, two-toed sloths and wild cats, have been found sharing a latrine in the forest canopy. Jeremy Quirós-Navarro, an independent ecologist in Costa Rica ...