Tropical Biodiversity - Shark and school of fish

What Causes Tropical Biodiversity?

Ecologists have always thought that tropical diversity came from increased species interaction. Find out why they may have been wrong all along. (4:30 min read)

Plasma: Exotic Fourth State of Matter on the Sun

Liquid, solid and gas? There's more to the story. Read about a new study on the behaviour of matter in plasma form on the surface of the sun.