Obama's national monuments are a big deal

The Arctic is a 'dead end' for ocean plastic

London sculpture spotlights the deadly relationship between seabirds and plastic

These tiny fish use their venom to kill ... pain

Where are Earth's largest nature reserves?

Take a dive to see the remains of the Titanic

Glowing blue algae lights up Tasmanian bay

Emerald treasure from 400-year-old shipwreck up for auction

Are your yoga pants polluting the oceans?

Why are Earth-observing satellites so important?

Mariana Trench contains 'extraordinary' levels of toxic pollution

What's under the sea will take your breath away