Scientists have announced a "historic" breakthough in the quest for fusion energy creation which could provide unlimited amounts of clean energy.
Energy Secretary Jennifer Granholm announced a "major scientific breakthrough" on Tuesday in the decades-long quest to harness fusion, the energy that powers the sun and stars.
Researchers at the Lawrence Livermore National Laboratory in California for the first time produced more energy in a fusion reaction than was used to ignite it, something called net energy gain, the Energy Department said.
