Climate change harms bats. In North America, extreme temperatures and drought are the biggest threats to bats from climate change. Bats fail to reproduce or die without enough water. Heat waves and severe winter storms have already killed many bats, and these extreme conditions continue to threaten bats and other wildlife. Renewable energy, such as wind and solar power, emit little to no greenhouse gases and are helpful toward combating climate change; however, wind energy must be managed carefully to avoid killing unsustainable numbers of bats.