Do you think that some scientist if you give him a ton of money can invent a cheap way of removing Carbon from air?
The solution is much more simple, stop putting Carbon in the atmosphere, this is something society needs to solve not scientists.
Think it live Bob is throwing shit in the river and you blame scientists that they can't invent something to clean the water that is cheap.
We could build modern nuclear reactors, we can fund research into fusion at the same time but until fusion is ready we could at least stop closing nuclear plants and finish/upgrade the existing ones. Probably much more money is spent in the entertainment industry in a year then in all CERN history.