Meet Skydweller: A solar-powered drone that can fly for 90 days straight. It’s wider and 160 times lighter than a Boeing 747.

(Image credit: Ray Sotolongo/Europa Press via Getty Images) US technology startup Skydweller Aero has partnered with Thales, a French defence technology company, to create a new maritime surveillance drone that can stay in the air significantly longer than existing models.…