Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal ...

The discovery fundamentally changes the understanding of a structure in the avian eye that has been misinterpreted for centuries.

Biologists have finally solved a centuries-old mystery regarding how birds maintain sharp eyesight despite ...

For the first time, clumps of human cells called organoids were fully integrated with the brains of rats—and influenced their ...

New U.S. dietary guidelines promote eating full-fat foods and meats. But experts say nuts and seed oils are better sources of ...

This unexpected ability opens the door for scientists to stimulate cellular mitosis and improve heart function after an ...

A newly developed imaging method blends ultrasound and photoacoustics to capture both tissue structure and blood-vessel function in 3D.

These days when it’s cold out and gets dark early, it can be tempting to hole up at home and keep to ourselves.

Artemis II will flight-test Orion and the Space Launch System, introducing integrated spacecraft, rocket, and life-support systems designed for sustained human travel beyond low Earth orbit.

New evidence reveals adult human hearts can regrow muscle cells after myocardial infarction, opening new possibilities for ...

Dogs have a very special bond with humans. They were the first mammal to be domesticated, and we have fashioned them into ...