In a handful of dust grains that traveled to Earth from the Kuiper Belt, traces remain of long-lost water bearing the ...

We're used to thinking of gravity in the context of large masses – the whirl of planets, the inexorable pull of a black hole.

The blood-brain barrier is a powerful thing. It maintains a strict 'guest list' of who's allowed in and who is banned from ...

Fluoride does a world of good for your teeth, but its inclusion in drinking water is not without controversy. Are those ...

Humans have been tattooing themselves for thousands of years, for spiritual, cultural, or personal reasons. Long before we were covering ourselves in ironic stick'n'pokes, butterfly tramp stamps, or ...

On the deep outer slope of a tropical reef in the middle of the Indian Ocean, there lives a coral colony 1.5 kilometers (almost 1 mile, or 100 buses parked behind each other) long, and potentially ...