agriculture

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.

Arts, Culture & Media

The causes of famine

Droughts and floods can cause food crises. But so can politics and economics. Reporter David Hecht examines the roots of the 2005 food crisis in the West African nation of Niger and why so many children starved to death despite an adequate harvest.