By Kate Abnett BRUSSELS, Jan 14 (Reuters) - Last year was among the planet's three warmest on record, the World Meteorological Organization said on Wednesday, as EU scientists also confirmed average

Authorities on Friday arrested seven bodyguards suspected of being involved in the assassination earlier this month of a popular mayor in west-central Mexico who they were supposed to be protecting. The Associated Press saw at least five of the suspects arrested by state and federal authorities in Uruapan on Friday, steps away from the site where Mayor Carlos Manzo was killed during Day of the Dead festivities on Nov. 1. An official familiar with the operation said all seven had been bodyguard

A peek inside some leading research labs shows how scientists-turned-detectives are painstakingly decoding what causes autoimmune diseases and how to stop the immune system from attacking you instead of protecting you. Researchers use laser-powered machinery and brightly colored fluorescent dyes to tell rogue cells from normal ones. Take Type 1 diabetes, caused when cells in the pancreas that produce insulin are gradually killed off by rogue T cells.