Earth
Keystone pipeline is greenest option for tar sands
Canada's tar sand oil is far more polluting than the conventional kind, but the controversial Keystone pipeline is the cleanest way to get it to market
News
Earth
Fuel of the future: How fiery ice could power Asia
News
Earth
Reap the whirlwind for cheap renewable power
News
Environment
Stomach-twisting fuel storage for gas-powered cars
News
Earth
Wanted: A Bob Geldof for climate change
Opinion
Earth
Arctic thaw may be first in cascade of tipping points
News
Earth
Splash and grab: The global scramble for water
Opinion
Earth
US nuclear dump is leaking toxic waste
News
Earth
Wiping out top predators messes up the climate
News
Earth
Fertiliser makes another reason to eat less meat
It's not a good time to be a meat lover. As the horsemeat scandal spreads across Europe, a report blames livestock for farms' excessive fertiliser use
News
Earth
Oil spill firm to pay $400 million to fix Gulf coast
News
Earth
Nuclear waste: too hot to handle?
Opinion
Earth
Flushed with success: Human manure’s fertile future
Features
Earth
Water wars loom as the US runs dry
News