Science and Technology

Study: Dogs Developed Facial Expressions to Be Able to Communicate with Humans

Dogs have developed their "sad eyes" facial look so as to draw humans’ attention and hearts, said a new study published at the University of Portsmouth scientists. Scientists compared the anatomy and behaviour of dogs and wolves, and found that the facial structure of dogs had gradually changed to enable them to communicate with humans.

Supernovas Could Have Forced Early Humans to Walk Upright

Ancient star explosions, known as supernovas, might have led early humans to walk upright as wildfires destroyed lush arboreal habitats and forced them out onto grasslands where two-legged living made more sense, a new theory suggests. “If you’re still using trees a lot, you now have to walk from one to the other — you can’t swing around up there like an orangutan,” said Adrian Melott, a physicist at the University of Kansas in Lawrence and lead author of a paper about the research published in the Journal of Geology.

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