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UberEats is rolling out a fleet of self-driving delivery robots in Miami
The hard truth of building clean solar farms
Foraging in trees might have pushed human ancestors to walk on two feet
YouTube introduces ‘timeout’ penalty to curb toxic comments
Toyota’s new Prius promises power, style, and a disappointment for catalytic converter thieves
Solar energy company wants to bolt panels directly into the ground
These long-fingered lemurs pick and eat their boogers, just like humans
Stormy weather brings tornadoes and blizzards across the US
Inside Google’s quest to digitize troops’ tissue samples
These might be the funniest animal photos you’ve seen this year