The Thames: Back from the Dead?

Dead fish after an overflow event. Image: Thames Anglers Conservancy. There once was a time when the Thames was teeming with life. Otters, eels, and even salmon were abundant. But time has not been kind to the river, and it has been subjected to the worst consequences of human development. The use and abuse of […]

Residents Lead the Way

Residents lead the way in restoring the River Wandle Bright and early on a June weekend morning, volunteers in a park in South London are pulling on waders, grabbing litter pickers, and slipping their hands into protective gloves. It’s time to clean up the River Wandle. The River Wandle starts in Croydon, runs through South […]

Science Behind the Photo #39

With thanks to Adair Farrar The San Juan River Goosenecks State Park in Utah, USA, overlooks a deep meander of the San Juan River, a 600-km-long tributary of the Colorado River. One of the best examples of entrenched river meanders in the world, the river flows through 8 kms of canyon while progressing westwards only […]

My, what big teeth you have!

Paddling in the Congo River System is not for the fainthearted.  This is the Goliath Tigerfish (Hydrocynus goliath). Living in freshwater rivers and lakes it is an aggressive predator. Its body is streamlined and muscular with broad tail fins. It’s a combination needed for speed. Its skin is stripy, possibly for camouflage and its colouring […]