Exactly. And it's not like our current trees don't capture enough CO2. It's just that we use most of the land for livestock agriculture. The carbon opportunity cost of this is huge [0].

Instead of trying to make trees capture more CO2 artificially or feed seaweed to cows to make them burp less methane, let's just eat less animal products?

I know, it's hard to change people's behaviors. But if you really want to make a dent in climate change, find ways how we can incentivize people to change their behavior (either by financial means like tax and subsidies, or by making better products like plant-based meats).

I'm making a similar comment like I made at yesterday's (?) YC launch of that lab-grown meat company. But that's because for me something like this, while it might be interesting research, is just one of those "future tech magic" things (just like carbon capture and lab-grown meat). We need real solutions, and we need them to work today. Not in 2 years from now.

0: https://www.nature.com/articles/s41893-020-00603-4.epdf?shar...