TIL that in 1952, 4,000 people were killed during a five-day smog in London

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The original link was: https://en.wikipedia.org/wiki/Great_Smog_of_1952

The Great Smog of London, or Great Smog of 1952, was a severe air-pollution event that affected the British capital of London in early December 1952. A period of cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants—mostly arising from the use of coal—to form a thick layer of smog over the city. It lasted from Friday, 5 December to Tuesday, 9 December 1952 and then dispersed quickly when the weather changed.

Wikipedia

Memorial to Quakers’ wartime service

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The original link was: http://www.bbc.co.uk/news/uk-england-stoke-staffordshire-22220232

A memorial recognising the wartime work done by Quakers has been unveiled at the National Memorial Arboretum in Staffordshire.

Quaker beliefs, among them pacifism, meant that many were unable to serve in the armed forces during wartime.

Many volunteered to serve in warzones in the Friends Ambulance Unit (FAU).

Leslie Steed, 94, from Birmingham, who served with the FAU during World War II, said: “I would rather have been killed than kill somebody.”

BBC News

TIL that microcomputer pioneer and inventor Clive Sinclair avoids the Internet because it “blurs the mind”

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The original link was: http://news.bbc.co.uk/1/hi/technology/7481940.stm

Personal flying machines will be a reality, home computer and electric car pioneer Sir Clive Sinclair has said.

He told BBC Radio 4’s iPM programme that soon it would be “economically and technically possible” to create flying cars for individuals.

Sir Clive is best-known for the Spectrum computer and his failed electric car effort, the C5.

“I’m sure it will happen and I am sure it will change the world dramatically,” he predicted.

Despite his pioneering work in the field of computers, Sir Clive told BBC Radio 4 he was not an internet user.

“I don’t use it myself directly,” he said, explaining that as an inventor he tried to avoid “mechanical and technical things around me so they don’t blur the mind”.

BBC News

TIL that in 2004, a book was published that suggested that TV series Buffy the Vampire Slayer was valuable as a guide to spirituality

This link was originally posted to /r/todayilearned. See more things from Dan's Reddit account.

The original link was: https://en.wikipedia.org/wiki/What_Would_Buffy_Do%3F

What Would Buffy Do?: The Vampire Slayer as Spiritual Guide is a book relating to the fictional Buffyverse established by TV series, Buffy and Angel.

Wikipedia

TIL that more than 1 in every 365 people die on their birthday, and nobody’s sure why

This link was originally posted to /r/todayilearned. See more things from Dan's Reddit account.

The original link was: http://www.bbc.co.uk/news/world-18626157

A study by Swiss researchers has generated a startling statistic – you are 14% more likely to die on your birthday than on any other day of the year. But why should that be?

As the researchers put it, “birthdays… appear to end up in a lethal way more frequently than expected .”

This is not a joke. The study was carried out by legitimate scientists who analysed data from 2.5 million deaths in Switzerland between 1969 and 2008.

There are a number of hypotheses which may explain the finding.

Perhaps some people close to death “hang on” until their birthday, to reach another milestone? Or perhaps a significant number of people take greater risks on their birthdays, like driving home from their own parties drunk?

But Professor David Spiegelhalter, a statistician from Cambridge University, says the Swiss data does not support the “hanging on” theory.

“They don’t find any dip before so there’s no holding on,” he says, “and they don’t find any blip after, so there’s no jumping the gun. It’s purely a birthday effect.”

The Swiss data, he says, suggests “something on your birthday kills you”.

BBC News

TIL that the most uncontacted people in the world, the Sentinelese, live in a hunter-gatherer society that isn’t even known to make fire.

This link was originally posted to /r/todayilearned. See more things from Dan's Reddit account.

The original link was: https://en.wikipedia.org/wiki/Sentinelese_people

The Sentinelese (also called the Sentineli or North Sentinel Islanders) are the indigenous people of North Sentinel Island in the Andaman Islands of India. One of the Andamanese people, they resist contact with the outside world. They are one of the uncontacted peoples, although like all of today’s so-called uncontacted people they have a history of limited contact.

Comparative map showing the distribution of Andamanese tribes in the Andaman Islands – early 1800s versus in 2004. Notably:
(a) Rapid depopulation of the original southeastern Jarawa homeland in the 1789–1793 period
(b) Onge (in blue) and Great Andamanese shrinkage to isolated settlements
(c) Complete Jangil extinction by 1931
(d) Jarawa move to occupy depopulated former west coast homeland of the Great Andamanese, and
(e) Only the Sentinelese zone is somewhat intact

The population is estimated at 40 to 500. In 2001, Census of India officials recorded 21 males and 18 females. This survey was conducted from a distance and may not be accurate for the population which ranges over the 59.67 km2 (14,700 acres) island. The 2011 Census of India recorded 12 males and three females. Any effect from the 2004 Indian Ocean earthquake and resulting tsunami is not known, other than the confirmation obtained that they had survived the immediate aftermath.

Author Heinrich Harrer described one man as being 1.6 metres (5 ft 3 in) tall and apparently left handed.

Wikipedia