Excuse me for not having read the whole thread. Here are some facts. (Or "facts". I haven't checked them, at least not recently.) Some may well have been filched from QI itself!
To make a black hole, the Earth would have to be compressed into a ball of radius (or diameter?) about 2 cm.
A thimbleful of neutron star material weighs over 100 million ton[ne]s.
For 1 second, a supernova puts out more energy than all the stars in all the galaxies in the universe.
We share 95% of our DNA with the gorilla, 53% with the cabbage. (Or so it seems to say here. My notes are a bit cryptic.)
90% of the living cells in a human body are bacteria. (Really? Or am I just very gullible? I suppose it's just that bacteria are very small? It can't be by weight!)
There are no recorded instances of a healthy wolf attacking a human being.
The tallest tree ever is (was?) a 435 foot Australian 'mountain ash' (eucalypt).
12% of hospital costs in the UK are caused by alcohol-related problems
About 250,000 mathematical theorems are proved (in published papers) every year.
In 2001, "up to half a million" children [but what does that mean, exactly?] in the UK were robbed of their mobile phones.
A blue whale's tongue is heavier than an elephant, and a male blue whale's penis is 16 feet long.
More U.S. soldiers committed suicide after serving in Vietnam than were killed in the war itself.
Poor people in Britain donate 3% of their income to charity, rich people 0.7%.
Ronald Reagan walked up to his own son at his high school graduation, failing to recognise him, and introduced himself as the President.
By melting ice, Herschel accurately estimated the Sun's power output at about a billion billion billion (i.e. 10^27?) watts, 1 second of which would satisfy the Earth's power needs for a million years.
The core of the Sun is so dense that the speed of light is less than 1 millimetre per second, and light can take over 200 years (I think they said) to reach the surface.
Samuel Johnson started out by believing that no word in English could have more than 7 applications, but found from his survey that many words could have many more; for instance, he found the one verb "take" to have 134 different applications, which altogether took him about 8000 words to explain. Difficult verbs (e.g. to "bear") started with the letter "B"! (There are apparently no difficult ones beginning with "A".) Johnson was very disappointed with the printed volumes for "A" and "B", but it was too late to change them. The OED began life as a revision of Johnson's dictionary, and still contains 1700 of his original definitions.
Richard Dawkins says that if he held his mother's hand, and she her mother's hand, and so on right back to our common ancestor with the chimpanzees, 5 to 6 million years ago, the line would stretch about 300 miles.
Richard Leakey points out that we and the chimpanzees are more closely related than horses and asses, who can interbreed, which suggests that we might be able to interbreed with chimpanzees.
The variable star Rho Cassiopeiae is a yellow hypergiant, 450 times the diameter of the Sun, and 550,000 times as bright.
No society in history has imprisoned as high a proportion of its population as the US. There are more 17-year-old black males in prison than in college. Prisons are run as businesses, and produce a very high proportion of all goods in certain sectors.
A survey of a quarter of a million South African schoolchildren showed that 63% of schoolboys think that forcing sex on a person is not an act of violence. ('Dispatches', Channel 4, Sun 23 May 2010.)
If all the DNA in your body were joined together and stretched out in a straight line, it would be one tenth of a light year long.
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Age: 60. Sex: male. Gender: OK I give up, please tell me
AQ: 37/50; Aspie Quiz: 110/200 for Aspie, 82/200 for NT
Almost certainly not Aspie, but certainly something like it