The Madres de la Plaza de Mayo condemn Obama for planning a speech in Buenos Aires on the date of their annual large march for justice.

Industrialised Nations Must Lead an Exit Strategy for Fossil Fuels.

In Britain, the growing season for plants is now one month longer than it was in 1960-1990.

In a few more decades, there will effectively be no winter for plants, just a not-quite-summer.

What our greenhouse emissions are doing to the world would be scary enough in a computer game.

When humans remove the top predators from an ecosystem, the result can be extinction of many other species.