A Chinese woman wears her dress and a protective mask as she waits to change after taking pictures in advance of her wedding near the Forbidden City, on April 30, 2020 in Beijing, China. Beijing lowered its risk level after more than three months Thursday in advance of the May holiday, allowing most domestic travellers arriving in the city to do so without having to do 14 days of quarantine. (Photo by Kevin Frayer/Getty Images)

Klemens Torggler's door is an invention based on rotating squares, The special construction makes it possible to move the door sideways without the use of tracks. This technical trick opens up new applications for the door.

Thousands of people were watching the Shoreham Air Show when it turned to horror as a Hawker Hunter plane crashed into a busy bypass, hitting at least four cars – including a wedding limousine.

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