Science On Top

70,000 Years ago, a small star passed within a light-year of Earth - within the Oort cloud on the edge of our solar system. New research suggests the sun can continue doing damage to our skin even when we go inside or cover up. A flawed study into the health effects of fluoride gets far too much media attention. Medical marijuana is not very effective for pain relief, and the industry is poorly regulated according to pain specialist Dr. Mick Vagg. A study of Europe's climate between the 14th and 18th century indicates that the Black Plague may have been spread more by gerbils, than rats.