Un feed che vale la pena scorrere.

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The Moon is slowly making Earth’s days longer

The Moon’s pull slowly makes Earth spin more slowly, while the Moon moves about 38 millimeters farther away each year. Over millions of years, this has made Earth’s days much longer.

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A few cancers can spread from one animal to another

Most cancers cannot pass between individuals. But in a few animals, living cancer cells themselves can move from one animal to another and keep growing. Examples include a transmissible cancer in dogs and a facial cancer in Tasmanian devils.

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Some undercover spies built entire families around false identities

In the 2010 Russian spy case in the United States, investigators described agents who spent years living under assumed identities. Some operated as married couples and raised children while maintaining their cover. The remarkable part of a long-term intelligence operation is not always a secret gadget: sometimes it is the construction of an ordinary-looking life.

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The St. Lawrence Seaway let ships bypass Montreal

The seaway opened in 1959, allowing ships to bypass Montreal. As businesses moved elsewhere, Montreal lost its long-standing economic dominance.

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Britain agreed to hand over all of Hong Kong

Hong Kong Island and Kowloon had been ceded to Britain with no end date, while the New Territories were leased for 99 years, until 1997. Yet a 1984 agreement provided for the whole colony to become a special administrative region of China.

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