Incredibly rare video of a leopard looking after a lost impala lamb. The footage was taken near Sabi Sands in the Greater Kruger National Park in South Africa. Source: Latest Sightings.com
E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places.
A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.