Clouds of noxious gas, stink bombs and purple smokescreens may sound like schoolboy pranks, but the animal world is just as capable of executing arresting chemical warfare, says Deborah Nicholls-Lee

The oceans are constantly moving, and water flow is actually even more critical to corals than light. Many corals in the deep oceans survive without any light, gaining all their nutrition from capturi

Keep clean and stay healthy heading into Spring

This month Wendy Graham tackles the tricky subject of limescale in the loo. IF your toilet has developed stubborn stains that make it look perpetually dirty, even after cleaning it thoroughly, then do

DR PETER BURGESS Peter is our disease expert. Send questions his way if you have pathogen problems. BOB MEHEN Bob is a master of fishkeeping general knowledge and community tanks. JEREMY GAY Jeremy is

New innovations mean you have more chance of keeping your boat afloat and avoiding polluting the sea around you. Rob Melotti investigates