Climate change is predicted to make droughts longer, heat waves more frequent, and storms more intense, and put hundreds of North American bird species at risk of extinction. The worst consequences of climate change may still be avoided, however, if we can slash greenhouse gas emissions and prevent global temperatures from rising more than 1.5 degrees Celsius above pre-industrial levels. Last year President Biden set an ambitious climate goal: reduce emissions 50 percent below 2005 levels by 2030. By modernizing our energy system, the Inflation Reduction Act (IRA) could help us get an estimated 40 percent of the way there. Hitting the target, experts say, requires innovation in four other key areas, too—all of which could get a boost from IRA funds. Transportation (27% of U.S. emissions) Light duty vehicles emit more than half of this sector’s greenhouse gases. The White House wants half of new cars sold to be electric by 2030, and the IRA includes new tax credits for...