U.S. judge to question Big Oil on climate change
Five oil companies argue in court papers that they should not be held liable for global warming
Water rationing in Brazil's capital to end by December, says governor
The water supply has declined due to low rainfall as well as rapid and disorderly growth in Brasilia
Plant urban trees and forests for happier and healthier cities
Trees in cities boost mental health, filter out air and noise pollution, cool cities and insulate homes from the cold
Hawaii campus joins U.S. trend to go all green
"We thought by doing this it would be a great example"
Water-smart agriculture could cut migration risk - FAO
Two-thirds of the world's people suffer some water scarcity for part of each year
Five ways to make parched cities cooler
Rather than relying on air-conditioning, cities should take innovative steps to cool down, such as changing building orientations or planting more greenery
McDonald's sets greenhouse gas reduction targets
"We will source our food responsibly, promote renewable energy and use it efficiently, reduce waste and increase recycling"
Paris mulls free public transport to reduce pollution
"To improve public transport we should not only make it more extensive, more regular and more comfortable, we must also rethink the fares system"
Carbon prices too low to protect SE Asian forests from rubber expansion - report
At current prices, carbon credits cannot compete with profits from felling forests and developing rubber plantations, study says