Is a challenging one for an industry that, by its very nature, burns fuel. here at the whittle lab at the university of cambridge, work is under way to introduce radical change to help lower aircraft carbon emissions and create more environmentally friendly ways of flying. this includes exploring prototype aircraft with more fuel—efficient shapes, and new types of fuel such as hydrogen for long haul, and electrically powered aircraft for short journeys. this issue is incredibly urgent. what we are talking about is a transformation in the global economy to take place in 30 years, it's a gener...