energy

Carbon dioxide could fight global warming

It was on a cool, clear autumn day in northern Minnesota when two scientists, driving towards a fieldwork station, stopped for gas. It was at this petrol station that Martin Saar and Jimmy Randolph had a flash of inspiration that could one day help in the fight against climate change. Road journeys in America are
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Bloomin marvellous

An unusually snowy winter, and weeks of heavy rainfall in south east USA has resulted in the Mississippi River flooding to record levels. As a response, US engineers have released the rising waters onto the floodplains surrounding the river, in order to save the heavily populated regions further downstream. The economic costs of such an
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