Bacteria make blue jeans green

They can be tight, flared, ripped at the knee. Jeans come in all styles and colours these days, but one hue will always be synonymous with the world's favourite garment: indigo blue.

Human waste an asset to economy, environment, study finds

Human waste might be an unpleasant public health burden, but scientists at the University of Illinois see sanitation as a valuable facet of global ecosystems and an overlooked source of nutrients, organic material and water.

page 1 from 23