The Toughest Emissions to Cut Are a Big Chunk of the Climate Problem Today

Efforts to tackle climate change typically focus on boosting renewable energy or cleaner cars, but there’s an entire realm of the economy they’re largely ignoring—one that accounts for about a quarter of global CO2 emissions from fossil fuels and industrial sources, a team of 30 scientists says. Without changes soon, emissions from these sources will be locked in for decades to come.