Efforts are underway all around the world to capture carbon dioxide from the atmosphere and store it. Trees, of course, are naturals at this. Over their lifetime, they absorb large amounts of carbon dioxide. But when they die and rot, all that carbon goes right back out into the air. So a few researchers have proposed burying dead trees underground in so-called “wood vaults” to sequester the carbon in the biomass… Researchers report in the journal Science that they have found a tree buried in clay that has degraded very little over time. The discovery suggests that it is possible to vault biomass as long as the right environment can be created… Wood vaulting would be a much cheaper way to sequester carbon than direct air capture or direct ocean capture of carbon dioxide.