Twitter users will now be able to tip content creators in bitcoin, and the social media giant is expanding its pilot tipping feature globally, a move meant to help creators monetize their content on the platform.

Kathy Trieu and co-workers study biomarkers of dairy fat intake and associated health outcomes.

A series of botanical encounters in the rainforest, excerpted from Francis Hallé’s book “Atlas of Poetic Botany.”

The 13th-century pages, found by chance at a British library, show a different side of Merlin, the magician who advised Camelot's king