Imagine: A switch is flicked and, in a heartbeat, every process spewing deadly pollution into the heavens is replaced with something clean and sustainable. Sadly, even then, the Earth would still tip towards being uninhabitable thanks to all of the carbon we’ve already dumped up there. If we as a species are to survive then all of that junk needs to be pulled back to Earth, and fast. Proponents of Direct Air Capture believe it’s a vital weapon to accomplish that task; its critics say it’s so inefficient that we’d be better off trying anything else first.
Direct Air Capture
Put simply, Direct Air Capture (DAC) is the practice of removing CO2 from the atmosphere by pulling air through a mechanical or chemical filter. Air is typically drawn through a DAC system via one or more fans, while filtering is done with a solid (known as a sorbent) or with a liquid (known as a…
