Video: Does melatonin do anything?

Melatonin is a widely used supplement. Many people turn to the hormone hoping it will improve their sleep, but do claims of its efficacy have any merit?

Californians take a shine to solar power

Jacquie Barnbrook had grown tired of the high electricity bills and her gas-guzzling luxury car when she finally decided to take the plunge last year.

Expedition observes hundreds of marine creatures in oil slick

(PhysOrg.com) -- The area affected by the Montara oil spill off the Kimberley coast contains a huge amount of marine life, including some of the most iconic and threatened species in the ocean, according to a marine wildlife ...