There is already so much excess CO2 in the planet’s atmosphere that it won’t be enough for us to stop our current carbon emissions from growing in future. To make a real impact on Earth’s climate for the better, we will need to start sucking large amounts of CO2 out…

We’ve pumped massive amounts of carbon dioxide into the planet’s atmosphere, thereby irreversibly altering its climate for the worse. We’ll need to stop doing that. But that alone will no longer be enough. We’ll also need to suck plenty of that CO2 out of the atmosphere and lock it away…