The history of a major animal group, composed of millions of species of insects, arachnids, and nemotodes, has been elusive -- until now. A team has now identified the oldest known ecdysozoan in the ...
A mummified ice age cub discovered in Siberia is exceptionally preserved, providing the first view of what sabre-toothed cats ...
The findings are the first to quantify how much work goes into switching on chromatophores, the specialized color-changing ...