Can we use salt to lock carbon for thousands of years?

Preserving "carbon crops" with salt and storing them in dry landfills to prevent them from decomposing could be a low-cost and scalable climate solution, according to physicist Eli Yablonovitch. The ancient mountain fortress of Masada in Israel is an amazing place to visit. Perched on a towering plateau overlooking the Dead Sea, the fortress was built between 37 and 31 BC as a fortress for Herod the Great and later occupied by Jewish rebels resisting Roman rule.

(Newscientist, Madeleine Cuff)