Images supplied by environmentalists and aerial photographers, meteorologists and satellite agencies.
Reduced visibility of the stars and planets in the night sky is a phenomenon known as light pollution and is caused by street lights and other man-made sources. This set of images shows the impact of light pollution in the cities and also images taken from space of planet earth.
A gallery of winter images. Everything from polar bears, flowers, emperor penguins, the northern lights to skiing.
Our environment pictures includes a collection of global warming images covering climate change, and both the possible causes and solutions.