Google has agreed to purchase 100,000 tons of carbon dioxide removal credits from Indian startup Varaha, its first such deal with a carbon project in India and the largest involving biomass-produced biochar (also called horticultural charcoal or “black gold” for soils). The offtake agreement credits will be delivered to Google by 2030 from Varaha’s industrial biochar project in the western Indian state of Gujarat, the two firms said on Thursday. Financial terms of the deal were not disclosed. So...