MathematicsThese centuries-old equations predict flowing fluid – until they don’t We use the Navier-Stokes equations every day, for applications from building rockets to designing drugs. But sometimes they break – and we don’t know why Comment
EnvironmentHave we found an unlikely solution to the climate impact of flying? Aviation is probably the single hardest industry to decarbonise. Sustainable fuels aren't the answer, but Mike Berners-Lee thinks there is one at hand Comment