Cancer is a class of diseases characterized by out-of-control cell growth. There are over 100 different types of cancer, and each is classified by the type of cell that is initially affected.
The hottest recorded temperature ever on earth was in Libya on September 13, 1922, which was 58 Â°C. Libya, Algeria, Death Valley and Iraq have some of the hottest temperatures on earth. During the summer, they have some of the hottest weather in the world. In contrast with these hot countries, the highest recorded temperature ever in the South Pole was on December 27, 1978, which was -14 Â°C.
How 2016 Became Earthâs Hottest Year on Record. 2016 is the hottest year on the historical record and the third consecutive record-breaking year, scientists say. âA single warm year is something of a curiosity,â said Deke Arndt, chief of global climate monitoring for the National Oceanic and Atmospheric Administration.