Entering the control room at Three Mile Island Unit 1 is like stepping back in time. Except for a few digital screens and new counters, much of the equipment is original to 1974, when the plant began generating electricity.
The area of the Deepwater Horizon oil rig is seen here in July 2010, shortly before the Macondo well was capped after spilling oil for 87 days. The Trump administration has proposed revisions to Obama-era rules that aimed to prevent similar disasters.
Dave Martin/Associated Press
Emissions rise from three large smokestacks at a coal-fired power plant in Castle Dale, Utah, in 2017. Democratic presidential candidates are releasing plans to reduce U.S. emissions in order to head off the most dangerous consequences of global warming.
George Frey/Getty Images
Once it is safe to remove the spent fuel from the pool, it's stored outside in metal casks. They are lined up on a concrete base, behind razor wire and against a hillside near the power plant.
The offshore oil drilling platform 'Gail,' operated by Venoco, Inc., is shown off the coast of Santa Barbara, Calif. in 2009. A Trump administration plan to greatly expand offshore drilling is on hold after a setback in court.
Pedestrians walk in Brooklyn on an unseasonably warm afternoon in February 2017, when temperatures reached near 60 degrees. To take action against climate change, New York City is requiring large buildings to retrofit their structures to improve energy efficiency.
Spencer Platt/Getty Images