Classroom

Celebrations of America's 250th anniversary were heavily impacted by extreme heat across the country

Learn about how climate change is threatening the future of America’s most significant historical sites

As concern grows for glaciers worldwide, one man and his family have spent decades monitoring their decline

Discuss why the Trump administration is spending big money to curb wind power development

The Hershey Company announced that it is returning all of its classic brands to earlier milk and dark chocolate recipes

Discuss one alternative energy that has great potential and risks

Discuss how rising sea levels and aging infrastructure challenge cities, and how experts are responding

Discuss the ways rapidly growing energy needs can be met in the United States

Explore the challenges scientists ran up against trying to study Antarctica's fastest melting glacier

Miles O'Brien reports on the work to drill into the ice to understand the impact of climate change