Elizabeth got in touch to ask: "do hairs grow out grey, or do hairs that have colour...

Why are preservatives, including mercury compounds like thiomersal, added to vaccines...

The UN Climate Change Conference - COP 25 - has been taking place in Madrid. The...

The waiting list for kidney transplants is one of the longest. Here's Phil Sansom...

How does water-based water-repellent paint work? Did a burger on top of my normally...

This is a response to a story we covered earlier this year about planting trees for...