Found this interesting.
credit-Zihui-Zhou-UC-Berkeley-supplied-to-the-media-e1729852003295-1068x621.jpg
Included in the broad scientific consensus on climate change is the notion that it's unlikely humans can prevent the worst events of 2°C of warming without removing excess carbon that's already in the atmosphere.
To that end, student inventors at UC Berkeley have created this yellow powder, half a pound of which can absorb the same amount of CO2 as a mature oak tree.Full story: https://www.goodnewsnetwork.org/eight-ounces-of-this-powder-removes-as-much-co2-from-the-air-as-a-tree/