Food and agricultural waste, excess manurses, human waste, and paper sludge. These are the materials that a Houston, Texas-based startup called Vaulted Deep deals in. Building on expertise from oil and gas waste engineering, it converts all this waste into so-called slurry and injects it directly into the earth.It's sort of a win-win. Um, both a win for the climate because we're helping lock away carbon for hundreds of thousands of years. We're avoiding methane emissions.We're also contributing to cleaner l ...