Ocean acidification is the name given to the ongoing decrease in the pH of the Earth's oceans, caused by their uptake of atmospheric carbon dioxide. Between 1751 and 1994 surface ocean pH is estimated to have decreased from approximately 8.18 to 8.1. PH is a measure of the acidity or basicity of a solution.

The Wildlife Conservation Society today released initial field observations that indicate that a dramatic rise in the surface temperature in Indonesian waters has resulted in a large-scale bleaching event that has devastated coral populations.

Britain's biggest supermarket chains will come under fire this week for handing out tens of millions more carrier bags than last year, derailing attempts to reduce the environmental impact from billions of disposable bags. Campaigners call for legislation as retailers fail to meet targets to cut one of the most visible signs of waste.

When his efforts to recycle were met with obstacles, one man went on to set up his own outfit to solve the problem. Another feels that while recycling is good, reducing and reusing are better for the environment.