On Thursday and Friday of last week, April 22 and 23, President Biden convened a virtual meeting of 40 world leaders to discuss addressing climate change. It is no longer possible to ignore changes in the world’s climate: the last decade was the hottest in recorded history, and the level of carbon dioxide in the atmosphere has reached record levels. Arctic ice is melting; last summer’s fires in Australia, California, and Colorado were catastrophic.

In 2015, representatives of more than 190 countries, including the U.S., gathered in Paris and hammered out an agreement on mitigating climate change, adapting to it, and financing those changes. Former president Trump withdrew the U.S. from the Paris Agreement. On his first day in office, Biden took the U.S. back into the international agreement.

But Biden seems not simply to be trying to adjust the nation’s energy production. With the Leaders Summit on Climate, Biden is taking what his Secretary of Energy Jennifer Granholm called “our generation’s moonshot,” a reference to the American determination to reach the moon in the 1960s, a goal that spurred previously unimaginable developments in technology, computers, and science.