380-million-year-old heart illuminates evolutionary history

Researchers have discovered a 380-million-year-old heart—the oldest ever found—alongside a separate fossilized stomach, intestine and liver in an ancient jawed fish, shedding new light on the evolution of our own bodies.

Phase transformation in titanium alloys observed at atomic scale

Titanium is an important structural metal. Titanium alloys are widely used in aerospace and biomedical applications, thanks to their light weight, remarkable specific strength, superb corrosion resistance and high heat resistance.

Watching the Milky Way's supermassive black hole feed

The supermassive black hole at the center of our Milky Way galaxy, Sagittarius A*, is by far the closest such object to us, about 27,000 light-years away. Although it is not nearly so active or luminous as other galactic ...

Stoneflies: Youth influences adulthood

In the majority of insects, metamorphosis fosters completely different-looking larval and adult stages. For example, adult butterflies are completely different from their larval counterparts, termed caterpillars. This "decoupling" ...

page 3 from 14