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All hail the flying taxi

Some of the world’s biggest companies are scrabbling to develop flying cars.
Tom Vanderbilt asks whether they are likely to take off

How to email a cat

Pneumatic tubes were once a vital part of communications networks in London, New York and Paris, says Tom Standage

Shock it to me

Can you become a better person by electrocuting yourself? Jonathan Beckman steels himself for a bolt from the blue

Breathe easy

As cities choke on polluted air, purification technology is developing rapidly. Natasha Loder takes in a lungful

Put a lid on it

The world has gone crazy for the Instant Pot. Jonathan Beckman steps into the kitchen and feels the pressure