Scientists uncovered a rare toxic algae, Karenia mikimotoi, behind mass marine deaths in South Australia and elsewhere.

And the ones that suffer the consequences of this are not only humans themselves, but also animals. To bring some awareness to the state of our planet and its inhabitants, Joan Chan, a 32-year-old ...

One woman adopted "the saddest cat in the shelter." Nearly a year later, she told Newsweek Lenny has transformed into a confident, playful cuddlebug.

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries.