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A new state-by-state analysis of the cost of transitioning the entire power supply to a 100 percent carbon dioxide emissions-free energy, made up largely of solar and wind power with battery backup, estimates the direct capital costs of such an effort would range between $18 trillion and $29 trillion.

President Donald Trump and former Vice President Joe Biden squared off for the first of three debates Tuesday night. Here’s six matters the two discussed...

Massachusetts Attorney General Maura Healey (D) struck down an ordinance banning new residences from installing gas infrastructure for heating and hot water in Brookline, Massachusetts, a suburb of Boston.

Vice-Presidential nominee Sen. Kamala Harris (R-CA) co-sponsored the Senate resolution to support the Green New Deal (GND). Now former Vice President Joe Biden, the Democratic party’s nominee for the Presidency in the 2020 election, has endorsed the plan.

U.S. public transit ridership has been declining for the last five years and the coronavirus pandemic is accelerating the decline.

The new documentary film Planet of the Humans follows writer, director, and producer Jeff Gibbs around the country as he asks necessary but difficult...

The New England Ratepayers Association (NERA) has filed a petition with the Federal Energy Regulatory Commission (FERC) to prevent states from passing on the...