pollution

Science, Tech & Environment

Rising carbon dioxide levels may reduce the nutritional value of important foods

Rising levels of atmospheric CO2 are already having significant impacts on climate, weather patterns and water supplies. Scientists expect increased carbon dioxide levels will also affect agriculture across the world, in ways we can't predict. The results of a recent study suggest that one of those affects could be quite alarming.

Global Politics

Geo Quiz and answer

The answer to today's Geo Quiz is the Ionian Sea. It's the site of a environmental battle over endangered loggerhead turtles. The BBC's Malcolm Brabant reports from the island of Zakynthos

Science, Tech & Environment

Cows, sheep and global warming

With 2009 likely to be a crucial year for international climate change negotiations, there's increased attention on the role agriculture may play in driving up global temperatures. Cows and sheep produce a LOT of methane, and scientists are looking at new ways to cut such "emissions". The BBC's Matt McGrath reports from Dublin.