PhysicsQuantum quirk explains why carbon dioxide causes global warming A phenomenon called the Fermi resonance, which affects how molecules vibrate, is responsible for a large part of carbon dioxide’s planet-warming effect News
TechnologySunlight could power micro-aircraft flying above the stratosphere The mesosphere – the atmospheric layer 50 to 80km above the ground – is out of bounds to normal aircraft, but millimetre-sized devices could fly there powered by sunlight News