Electric flight is coming, but the batteries aren’t ready

The idea of electric powered flight has been around for decades, but only recently has it begun to take off. There are over a dozen startups and companies today that are pursuing battery-electric and hybrid prototypes, with some suggesting we could all be nibbling on pretzels and scrolling through in-flight entertainment from within zero-emission, battery-powered aircraft sometime in the next decade.
The concepts under development today look nothing like the retro-futuristic models from the pag