Biden Outlines a Plan for Cleaner Jet Fuel. But How Clean Would It Be?

Some biofuels may contribute to greenhouse gas emissions in ways that can significantly reduce, and sometimes offset, their advantages over fossil fuels, studies have shown.

From 4% to 45%: Energy Department Lays Out Ambitious Blueprint for Solar Power

The department’s analysis provides only a broad outline, and many of the details will be decided by congressional lawmakers.

Opinion | Resistance to Vaccines in the Southern States

Readers offer personal glimpses of life in the South. Also: Senators who tested positive for Covid; Afghanistan's lesson; hydrogen and the climate.

Energy Department Targets Vastly Cheaper Batteries to Clean Up the Grid

The Biden administration's push for more wind and solar power poses big challenges. New types of energy storage could help — but only if they get much cheaper.

Are ‘Heat Pumps’ the Answer to Heat Waves? Some Cities Think So.

Electric heat pumps are a way to cool and heat homes at a much lower carbon cost than traditional air-conditioners and furnaces.

House Passes Bills to Bolster Scientific Research, Breaking With Senate

The legislation would invest in traditional research and development, clashing with a broad Senate measure that focuses on cutting-edge technology to compete with China.

Senate Overwhelmingly Passes Bill to Bolster Competitiveness With China

The wide margin of support reflected a sense of urgency among lawmakers in both parties about shoring up the technological and industrial capacity of the United States to counter Beijing.

Biden Administration Moves to Fix Supply Chain Bottlenecks

A swath of recommendations calls for more investments, new supply chains and less reliance on other countries for crucial goods.