Climate change has already affected Washington. The average temperature has increased more than 2 degrees here in the last century, and the flooding has already become catastrophic and will become ...

It isn’t the only threat climate change presents: Come summer, hot and muggy nights make it hard for the trees to repair themselves. All year round, floods inundate their roots with salty water.

Many of Washington's iconic flowering cherry trees will be cut down because of climate change. While warming temperatures are causing cherry blossoms all over the world to bloom earlier, rising ...

A major federal climate website has been shut down by the Trump administration, multiple agencies confirmed to ABC News.

Climate protesters in Washington, D.C. were handcuffed on Thursday after they dragged paint on a glass cover protecting an art sculpture. The incident happened at the National Gallery of Art by ...

The hot, humid conditions in Washington, D.C., on Thursday were primed for electricity. Air temperatures topped out at 94 degrees Fahrenheit (34 degrees Celsius) – or 5F (3C) higher than the 30 ...

Even assuming fossil fuel emissions actually do drive climate change, DC’s “historic” laws might therefore reduce average global temperatures by 0.0002 degrees by 2100.

Washington state leaders are upset that the federal spending bill phases out clean energy tax credits for things like heat pumps and solar.

WASHINGTON (7News) — Supporters of the Declare Emergency campaignblocked some northbound lanes of Interstate 395 in Washington, D.C. Wednesday morning, police said. TheMetropolitan Police ...

the famed washington, dc cherry blossoms are now at peak bloom. it’s beautiful. they’re forecasting the peak bloom date has been a bit of a guessing game over the past few years, impacting ...

The National Gallery of Art in Washington, D.C. says the FBI is involved in an investigation after climate change protesters targeted a famous sculpture – Edgar Degas' "Little Dancer Aged Fourteen." ...