Tech

When is public transport free in Paris? When pollution gets out of hand

Meet SALTO, the tiny robot that jumps better than you

How much screen time is too much for kids?

New LED bulbs put out a lot more than just light

How would you repurpose a rusty, 86-year-old bridge?

Scientists watch as a new species evolves before their eyes

8 subway maps that double as works of art

Gmail plug-in means never having to say you're sorry

It's Cyber Monday, an archaic name for an irrelevant event

How algorithms influence us every day

Asteroid strike that doomed dinosaurs created 'instant Mount Everest'

Free Google app turns old photo prints into glare-free digital images

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