As a Citizen . . . Make calls, write letters, attend town halls. . . . [M]ake clear that this is an issue… — Bill Gates

When it comes to climate change, I know innovation isn’t the only thing we need. But we cannot keep the earth livable without it. Techno-fixes are not sufficient, but they are necessary.

To get [the breakthroughs on the "Technologies needed" list] ready soon enough to make a difference, governments need to . . . [q]uintuple clean energy and climate-related R&D over the next decade. . . .

It helps to set ambitious goals and commit to meeting them, the way countries around the world did with the 2015 Paris Agreement. It’s easy to mock international agreements, but they’re part of how progress happens: If you like having an ozone layer, you can thank an international agreement called the Montreal Protocol.