Every single search, every streamed video and every email sent, billions of times over all around the world, it's all part of our daily life by now. But it all adds up to an ever-increasing global demand for electricity, and a large digital carbon footprint too. What can we do to reduce the impact our energy-hungry online lives are having on the planet?

A UK app has created a special cash lottery for anyone picking up and binning litter.

Wisdom in a world of 'smart': frontline research from environmental advocates reveals how smartphone technology is impacting both humanity and the environment.

From couches and apartments to bicycles and cars, all manner of personal items and possessions are now in circulation as part of the booming sharing economy.