To stave off the worst immediate outcomes of climate change, the U.S. needs to reach net zero carbon emissions by 2050, according to a report released this June by the U.S. House Select Committee on the Climate Crisis. In the final event in MIT’s Climate Action Symposia series, held Nov. 16, a panel of policymakers agreed the 2050 deadline means that the time for small-scale climate solutions has passed. Swift and massive investment by the U.S. federal government is essential, they said, beginning with the incoming Biden administration. Rep. Kathy…