Blood tests are useful tools for doctors and scientific researchers: they can reveal a lot about a body's health. Usually, a blood sample is taken to get a picture of the large molecules that are ...

Fossils unearthed in Morocco from a little-understood period of human evolution may help scientists resolve a long-standing mystery: Who came before us? Three jawbones, including one from a child, ...

Contrary to popular depictions of bee nests as large, intricate hives that hang from trees, the majority of bee species — about 90% — are actually solitary and build their nests in the ground or ...