A scheduled test resulted in the explosion of the Soviet nuclear power plant that burned for 10 days before it could be contained. Radioactive clouds rained down on much of the Northern Hemisphere. Over 700 people died and untold more were exposed to high levels of radiation. Elevated levels of cancers, deformities in newborns, and organ failure could affect generations to come. Many safety enhancements have been made in the wake of the Chernobyl disaster. Features that hopefully will not be tested as nuclear energy begins a resurgence because of increased energy demands and the desire for "clean" fuels to limit the impact on global warming.