This week, solve the mystery of an ancient human ancestor’s fossil, meet a new generation of dire wolves, spy April’s full moon, and more.

Fishermen floating on “corchos,” makeshift rafts have become common on the waters off the coast of Havana. It is an ...

Hydrogels, which are soft materials formed by crosslinking polymers, could have a variety of medical applications.

Hydrogels, which are soft materials formed by cross-linking polymers, could have a variety of medical applications. In ...