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21/ Astronauts cannot belch
- there is no gravity to separate liquid from gas in their
stomachs.
22/ The air at the summit
of Mount Everest, 29,029 feet is only a third as thick as
the air at sea level.
23/ One million, million,
million, million, millionth of a second after the Big Bang
the Universe was the size of a ...pea.
24/ DNA was first discovered
in 1869 by Swiss Friedrich Mieschler.
25/ The molecular structure
of DNA was first determined by Watson and Crick in 1953.
26/ The first synthetic human
chromosome was constructed by US scientists in 1997.
27/ The thermometer was invented
in 1607 by Galileo.
28/ Englishman Roger Bacon
invented the magnifying glass in 1250.
29/ Alfred Nobel invented
dynamite in 1866.
30/ Wilhelm Rontgen won the
first Nobel Prize for physics for discovering X-rays in 1895.
31/ The tallest tree ever
was an Australian eucalyptus - In 1872 it was measured at
435 feet tall.
32/ Christian Barnard performed
the first heart transplant in 1967 - the patient lived for
18 days.
33/ The wingspan of a Boeing
747 is longer than the Wright brother's first flight.
34/ An electric eel can produce
a shock of up to 650 volts.
35/ 'Wireless' communications
took a giant leap forward in 1962 with the launch of Telstar,
the first satellite capable of relaying telephone and satellite
TV signals.
36/ The earliest wine makers
lived in Egypt around 2300 BC.
37/ The Ebola virus kills
4 out of every 5 humans it infects.
38/ In 5 billion years the
Sun will run out of fuel and turn into a Red Giant.
39/ Giraffes often sleep for
only 20 minutes in any 24 hours. They may sleep up to 2 hours
(in spurts - not all at once), but this is rare. They never
lie down.
40/ A pig's orgasm lasts for
30 minutes.
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