Necrotising fasciitis is a rare but potentially deadly bacterial infection that releases toxins which damage nearby tissue.

Yes, it's a radioactive substance with an atomic number higher than uranium - that makes it potentially deadly to humans.

The contents cause chemical burns and potentially deadly breathing problems.

Research shows sudden drops in temperature can lead to a sharp increase in potentially deadly brain clots.

Thousands of patients could benefit from a blood test that can detect lung cancer up to five years before potentially deadly symptoms appear.