Biologists have long puzzled over how organs develop into their final shapes, and the nearly transparent bodies of young sea stars may offer a unique window into the organ development process.

Rare fossils from Illinois are challenging one of evolution's oldest assumptions and revealing an unexpected path taken by ...

A breakthrough study revealed a primitive brain region that acts as a built-in filter to block out a noisy world.

Smaller than a domestic cat, there are two species of wild cat that could be considered the world’s smallest cat. Meet these ...

Researchers found fossils suggesting that these early octopuses could have reached 19 meters in legnth. Their fossil jaws ...

Arguably one of the most curious ancient human relatives is Homo floresiensis, a 3-foot-tall species that lived on the ...

Analysis of fossils discovered in Illinois reveals a previously unknown growth pattern and opens a new scientific debate.

Successful reproduction presents a fundamental evolutionary paradox: the immune system must tolerate genetically foreign sperm and embryos while maintaining ...

With El Niño expected to occur this summer, we expect another year of extreme threats to biodiversity' An international group ...

A study of fossil teeth from China shows early mammals got bigger before their diets became specialized after the ...

Bengal underlines, once again, the ecological significance of its remarkably varied landscapes — from the Sundarbans and the ...

A 150-million-year-old fossil unearthed in Fujian province has revealed what researchers say is the smallest known ...