President Biden’s American Jobs Plan has put the United States on an aggressive path toward a clean electricity standard (CES) that, at least for the moment, is ambitious in scope and vague in the particulars. The administration would require electric utilities to incorporate specified amounts...

The Commonwealth of Massachusetts recently passed a climate bill that sets a target of net-zero emissions for the state by the year 2050. The bill is one of several successful legislative efforts in Northeastern states to reduce greenhouse gas emissions by as much as 80 to 100 percent by...

The long-term goals of the Paris Agreement—keeping global warming well below 2°C and ideally 1.5°C in order to avert the worst impacts of climate change—may not be achievable by greenhouse gas emissions-reduction measures alone. Most scenarios for meeting these targets also require the...