TechnologyInvention: Month-long aircraft flights An uncrewed plane powered by hydrogen could fly for weeks without landing, a new patent application claims ¿ìè¶ÌÊÓÆµ
TechnologySome ozone to go with your flight, sir? Illegally high levels of the harmful gas found on some US flights suggest that all aircraft should be fitted with ozone converters ¿ìè¶ÌÊÓÆµ