It’s a pointless waste of money anyway, sea levels will continue to rise and the super storm that will blow it all away is around the corner.

Wasn’t that how “ministry for the future” started?

Totally agree. Same with electric cars. Yes, they are not great. But we need to find a way to reduce emissions rapidly. Which means re-using already built infrastructure. Which is, as much as it sucks, roads.

How do you measure “efficiency” ? By money spent? Then yes, trees are currently cheaper. But trees are complicated (see other comments). Additionally, even if we cover the whole landmass with trees, there is still a catastrophic amount of Co2 left in the atmosphere.