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Electric Planes: This is what’s keeping electric planes from taking off.


Batteries have been packing more power into smaller spaces for about 30 years, and continuing improvements could help electric planes become a more feasible option for flying. But they’re not there yet, and ultimately, the future of electric planes may depend on the future of progress in battery technology.

Casey CrownhartStartups are exploring how electric planes could clean up air travel, which accounts for about 3% of worldwide greenhouse-gas emissions. The problem is that today’s electric aircraft could safely carry you and about a dozen fellow passengers only around 30 miles, according to a recent analysis. The limiting factor is the battery, in particular the amount of energy that can be stored in a small space. If you’ve folded your legs

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