Highly valued economically, ecologically and culturally, the white oak (Quercus alba) is a keystone forest species and is one of the most abundant trees across much of eastern North America. It also ...

Highly valued economically, ecologically and culturally, the white oak (Quercus alba) is a keystone forest species and is one ...

Arachnid evolution involved multiple land transitions, not just one. Spiders and scorpions evolved key traits through gene duplication.

Birds are inextricably linked to feathers, which allow them to fly, keep warm and put on dramatic displays. Feathers, however ...