The effects of the explosion ended up disabling several satellites at the time, and the US and Soviets agreed a year later to ...

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

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

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

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

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 ...

We all know the rules. If, for whatever reason, by whatever means, you travel back in time, you absolutely must not find and kill your own grandfather before he has had a chance to procreate. Doing so ...

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 ...