I read that China now accounts for 27% of the world’s greenhouse emissions, the U.S. accounts for 11%, India and the E.U., for about 7% each. Climate change can’t be significantly slowed unless emissions are sharply brought down beginning very soon. This can’t happen without a consensus among world leaders that we have to unite to act much more aggressively. Something more is needed than the “Paris accord” and various countries and mega-corporations setting goals. China’s participation is critical. Biden should initiate discussions with Xi Jinping to discuss the issue. If a common understanding can be reached, it would ease tensions between the two countries in other respects. Probably nothing can be done. But we should try, and not just pretend to try.