Humans threaten crucial 'fossil' groundwater

Human activity risks contaminating pristine water locked underground for millennia and long thought impervious to pollution.

Cold weather and less sun linked with disease

New European research has found that those who live in colder and less sunny parts of the world are also more likely to have alcoholic cirrhosis.

Does caffeine have impact on ADHD?

A lot of what you eat and drink contains caffeine – not just your morning coffee.