A prehistoric predator once hailed as the world’s largest spider has been unmasked as something entirely different. More than ...

The "exquisitely preserved" specimen supports the idea that these creatures swam before adapting to life on land, according to a study published Tuesday in Current Biology. Researchers at the ...

Brown spider monkeys (Ateles hybridus) are some of the world’s most threatened primates, as deforestation has razed about 85% of their habitat in Colombia. With monkey populations living in patches of ...

New research suggests spiders and other arachnids may have originated in the sea, based on analysis of a 500-million-year-old fossil. The "exquisitely preserved" specimen supports the idea that these ...