Do any bugs live in the ocean? Crustaceans and insects share a common ancestor, but bugs are happier on land. Water striders are the only insect that live entirely on the ocean's surface. Breakthroughs, discoveries, and DIY tips sent six days a week. By some estimates, insects make up 80 percent of named animal species.

'Lucy' probably needed to watch her back. Researchers led by the University of Iowa have described and named a new crocodile species that roamed a region in Africa more than 3 million years ago. The species is named Lucy's hunter, because it overlapped with the famed Lucy and her hominin kin and would have hunted them. Breakthroughs, discoveries, and DIY tips sent six days a week. Humans have contended with crocodiles for a long time.

Paleontologists say'Tanyka amnicola' had a jawbone that's a real head-scratcher. Tanyka amnicola lived in prehistoric rivers around 275 million years ago. Breakthroughs, discoveries, and DIY tips sent six days a week. There are quite a few animals considered "living fossils" in today's world. Once thought extinct, the prehistoric coelacanth has continuously swam through Earth's oceans since the time of the dinosaurs.

In the causal bandit setup, we propose a two-stage approach.