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241/ A cockroach can live
for nine days without its head.
242/ The biggest shark species
has the smallest teeth. The 12 metre long whale shark has
more than 4,000 teeth, each only 3mm long.
243/ The female lion is a
much more efficient hunter than the male.
244/ We share 98.4% of our
DNA with a chimp - and 70% with a slug.
245/ Men who ride a bike for
ten hours a week are four times as likely to be impotent as
non-bike riders say US scientists.
246/ If the neurons from a
single brain were divided out equally among the US population,
each American would get approximately 366 brain cells.
247/ The oldest known hominid
skeleton from Ethiopia has been dated at 4.4 million years.
248/ The earliest human tools
have been dated at 2.7 million years old.
249/ Human foetuses react
to loud rock music by kicking.
250/ At just 12 weeks the
human foetus can scowl and squint.
251/ By 24 weeks the human
foetus can suck its thimb so hard that blisters are raised.
252/ At 23 weeks the human
foetus experiences REM (Rapid Eye Movement).
253/ A newborn's skin is thinner
than an adults.
254/ The lightest baby to
survive weighed a mere 283 grams.
255/ More babies are born
at night than in the day.
256/ The average weight of
the male brain is 1.4 kilos: 1.25 for females.
257/ Twins have a higher than
usual rate of left handedness.
258/ 65% of those suffering
autism are left handed.
259/ One third of all adults
experience difficulty distinguishing left from right.
260/ Apart from humans the
only land animal that cries is the elephant.
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