As much as we need to cut aviation’s emissions, batteries aren’t going to do the trick. To replace turbine-driven airliners with similarly-sized electric aircraft will require a monumental leap in battery technology — and we’re simply not there yet. So how can we make aviation sustainable? According to studies by the UK’s Aerospace Technology Institute (ATI), aviation can achieve the net-zero 2050 target through the development of both sustainable aviation fuel (SAF) and green liquid hydrogen technologies.