Where possible, our camps are 100% solar-powered (with back-up generators for emergencies) using photovoltaic panels, battery banks and invertors to generate and store energy. This – together with solar water heaters – mean that fossil fuel usage is dramatically less than were we to use diesel generators or even (were it possible) grid electricity. Of course, vehicles and boats, which are essential to our operations, use fossil fuels like diesel and petrol, as we do use LP gas for fridges and stoves and even wood for cooking, but we concentrate a very large proportion of our activities on walking and kayaking. Water and human waste are also a significant area of focus and the use of septic tanks and soakaways in permeable soils is critical to avoid water table contamination. We limit single use plastic wherever this is possible, even banning it outright in our Madagascar operation.