Kind: captions
Language: en
I'm in New Zealand's beautiful Milfred
sound which is actually not a sound but
a fjord so one question you might ask is
what is the Fjord well the answer is
it's a giant Channel carved out of the
Rock and it was carved by glaciers so
ice moving down through here at
incredibly slow speeds how long do you
reckon it would take a glacia to like
carve out a valley like Milford millions
of years yeah easily easily Millions so
I've been going around asking people how
old is the Earth wow that's a good
question I'm not really sure we should
know this oh good question
um millions of I'd say probably I don't
know millions of years old maybe four
four five millions of years couple of
million years old oh millions millions
of
years 2.3 million No 3 million 3.2
million do I hear four do I hear four
million it's a million 10
million 20 milli million nice I like how
you doubled them down that that was good
I thought it was 36 million 46 million
40 billion oh I'd say like three or four
months
right millions and
millions a billion years old couple
billion years old 4
billion
4.2 billions billions years yeah like
this so the answer is it's 4 and A2
billion years old that's really quite a
long time but I think to most people the
difference between a million years and a
billion years is uh well it's difficult
to imagine so let's try to put this in
perspective if you imagine that uh my
armspan is the history of the Earth with
the starting of the Earth at the tip of
my uh right fingers then well life would
have formed somewhere around my right
forearm but from there all the way up to
oh about my left forearm only we only
had single celled uh creatures then just
before my left wrist we get the first
fish then amphibians dinosaurs around my
uh left palm and finally mammals around
the base of my fingers now dinosaurs
lived up until the uh second knuckle on
my uh on my right middle finger and
humans have only been around for well
basically the very tip of uh of my
middle finger so if you think about the
scale of the uh the Earth's evolution on
on that time scale humans have been here
a very short time and in fact the Earth
has been here uh for a huge period of
Time 4 and a half billion
years