Learn the true colour of water, why it appears blue, and what different water colours reveal about ecosystems.

If you're hoping for a festive skywatching surprise, Christmas week is shaping up to be more active than usual in space. Fast ...

The South Sandwich Islands were born from a tectonic collision, forged by volcanism and relentlessly reshaped by ice, wind ...

Each state welcome sign is unique, and some are more creative than others. Be sure to check them out on your next road trip!