The IT sector is believed to have the same carbon footprint already as the aviation industry with its fuel emissions.
What if you could call a taxi to take your rubbish away? In some places you can.
Chemical contents of these medicinal mood-lifters are taking a toll on marine life, even in relatively concentrations.
Simply replanting trees, to create secondary forests, is no substitute for keeping primary forests intact in the first place.
Mixing discarded cigarette butts into asphalt makes road surfaces more robust and less heat-absorbent.
A study indicates that crops such as rice and wheat will lose some of their nutritional value as a result of climate change.