Lithium is present naturally in many water systems and was once considered an elixir. It has long been used to treat bipolar disorder, but researchers have also started exploring its role in dementia.
The randomised controlled trial is touted as the gold standard in medical research. But its controlled laboratory conditions are far removed from the messy realities of life.
The way sea lions swim is unique among fish and marine mammals. Their technique provides a biomechanical model to design agile underwater vehicles... but first we have to figure out how they do it.