High levels of calcium are toxic to cells and contribute to loss of neurons in Alzheimer's disease. A new study published in ...

Even the most disciplined sleepers struggle sometimes. We asked leading sleep experts for the tips, habits, and gadgets that ...

You walk into your home every single day, greeted by familiar smells that have become invisible to your nose. Everything ...

Pigeons have long stunned scientists with their ability to cross unfamiliar landscapes and still find their way home, even when landmarks vanish and the sky is overcast. Researchers are now closing in ...