Studies of the potential climate effects of nuclear war in the 1980s focused on northern hemisphere, large-scale nuclear conflicts, and predicted more extreme global “nuclear winter” scenarios.

The Trump administration has created an exclusion for new experimental reactors being built at sites around the U.S. from a major environmental law. The law would have required them to disclose how ...

At the outset of the Cold War era, the United States and the Soviet Union rapidly built up large nuclear arsenals as part of the prevailing doctrine of deterrence, under which each nation attempted to ...