Summer is the season for dining alfresco, and gathering around the fire pit with a drink as night sets in. But once the ...

Bordered pits are cavities in the thick secondary cell walls of both vessels and tracheids that are essential components in the water-transport system of higher plants. The pit membrane ...

The La Brea Tar Pits is one of the only pale ontological sites on Earth that has preserved an entire ecosystem over time, from plants to camels to bugs. And every new fossil not only helps tell ...