TEARS can be a relief or an embarrassment - they can spring from happiness, pain or grief, or just be the result of chopping some onions. Without them, our eyes wouldn't work normally. Our tears ...

Taking cocaine just once can trigger dramatic changes in the brain, causing memory loss and leaving the user addicted, researchers have found. The drug can 'hijack' normal memory function, making ...

Debating the week's big religious, moral and ethical issues.