5% of farmland can be used for modified plants to cheaply remove 50% of atmospheric CO2

Specially modified plants could remove 20X more CO2 than current plant varieties
(Image by Next Big Future)   Details   DMCA

5% of farmland can be used for modified plants to cheaply remove 50% of atmospheric CO2.  The plan involves a compound called suberin which is most commonly seen in cork trees.

Also, Cows can have seaweed mixed into their feed to drastically reduce the methane (cow farts) they produce.

A 2016 study that claims feeding cows small amounts of seaweed along with their normal diet of grass can reduce methane emissions by up to 99 per cent.