AN URGENT search has been launched for a mystery man prowling the streets wearing nothing but a mask and trainers. Lancashire Police are on the hunt after CCTV captured the figure walking by houses… ...

Doctors recommend the best face masks and filters for preventing smoke inhalation during wildfires. Their picks include N95 masks, KN95 masks, KF94 masks, and 3M P100 respirators.

Medical research on marijuana. How does marijuana affect the brain? What are some of the risks? Could ingredients in marijuana treat disease? Read this and more.