Sustainability and net-zero emissions have reached the aviation industry, where start-ups, major aircraft manufacturers, aerospace engine makers, and even NASA are developing and testing battery-powered aircraft. The world's first all-electric commuter aircraft is getting ready for its first flight, which is expected to take place within weeks, courtesy of the company Eviation. Eviation's Alice all-electric aircraft has a maximum range of 440 nautical miles (just over 500 miles). Battery technology is much more difficult...