Offsetting Emissions Mangroves at Watamu 174 Our general approach is to plant trees to offset emissions. However we know it’s not as simple as Eburru Forest looking at carbon, and offsetting with a carbon sink of 425 some kind. What about biodiversity? We’ve tried to start thinking about the bigger picture this year, which is why we still plant trees, but we also look at consider projects that take into account some measurement of biodiversity which is why this year we’ve done some planting through the For Trees Club.