Scarred by bombardment craters, radioactive rubble, choking ash, salt flats, and alkaline seas, Tuchanka, the krogan homeworld, can barely support life. Thousands of years ago life grew in fierce abundance under the F-class star Aralakh (a Raik clan word meaning "Eye of Wrath"). Tree analogs grew in thick jungles, their roots growing out of shallow silty seas. Life fed upon life in an evolutionary crucible. This world died in nuclear firestorms after the krogan split the atom. A "little ice age" of nuclear winter killed off the remaining plant life. In recent centuries many krogan have returned to their homeworld. The reduced albedo has caused global temperatures to rise. In order to maintain livable temperatures, a vast shroud was assembled at the L1 Lagrange point. It is maintained by the Council Demilitarization Enforcement Mission (CDEM) which is based on orbiting battlestations. Death comes in many forms on Tuchanka: from the radioactive fallout spread by the krogan's nuclear war, to the lethal heat from the reduced planetary albedo, to vicious and predatory animal life.