Renewable energy rises from the ashes

This article was written for New Scientist. You can read the full piece here.

This article was written for New Scientist. You can read the full piece here.

This article was written for New Scientist. You can read the full piece here.

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 notoriously long, allowing for many long discussions. On this particular trip, the men had only two things on their mind. Firstly, the work they had been commissioned to do by Minnesota Geological Survey on the potential for storing carbon dioxide in the local area. And…

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 action are huge – some reports put the cost at $295 million a day. Ecologically, there is more bad news. River water naturally contains large amounts of sediments that have eroded as the river travels downstream. This sediment is incredibly rich in nutrients, and as…