You’ve only just got used to hearing about 4K TV and now some people are talking about 8K. But what the hell is it? What makes 8K different to 4K? And do you need it? Or is it worth waiting a while ...

Petechiae are tiny red or purple dots that don't turn white when you press on them. They can be caused by infections, certain medications, and vitamin deficiencies. They can also be a symptom of low ...