D e B T i s S l a V 3 r Y S T u P i D
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Cosmos.A.Spacetime.Odyssey.S01E09.1080p.BluRay.x264-DeBTViD
DVD.DATE.. 10 June 2014
RLS.DATE.. today
GENRE..... Documentary
LANG...... English
ViDEO..... 1920x1080
BiTRATE... 9074kb/s
FPS....... 23.976fps
ASPECT.... 16:9
AUDiO..... 1509kb/s 5.1 DTS
DURATiON.. 44m18s
SOURCE.... R1 BD
SIZE...... 71x50mb
SUBS...... English
IMDB: http://www.imdb.com/title/tt2395695/
RELEASE NOTES
This episode explores the palaeogeography of Earth
over millions of years, and its impact on the
development of life on the planet. Tyson starts by
explaining that the lignin-rich trees evolved in
the Carboniferous era about 300 million ago, were
not edible by species at the time and would
instead fall over and become carbon-rich coal.
Some 50 million years later, near the end of the
Permian period, volcanic activity would burn the
carbonaceous matter, releasing carbon dioxide and
acidic components, creating a sudden greenhouse
gas effect that warmed the oceans and released
methane from the ocean beds, all leading towards
the Permian Triassic extinction event, killing 90%
of the species on Earth.
Tyson then explains on the nature of plate
tectonics that would shape the landmasses of the
world. Tyson explains how scientists like Abraham
Ortelius hypothesized the idea that land masses
may have been connected in the past, Alfred
Wegener who hypothesized the idea of a super-
continent Pangaea and continental drift despite
the prevailing idea of flooded land-bridges at the
time, and Bruce C. Heezen and Marie Tharp who
discovered the Mid-Atlantic Ridge that supported
the theory of plate tectonics. Tyson describes how
the landmasses of the earth lay atop the mantle,
which moves due to the motion and heat of the
earth's outer and inner core.
Tyson moves on to explain the asteroid impact that
initiated the Cretaceous Paleogene extinction
event, leaving small mammals as the dominant
species on earth. Tyson proceeds to describe more
recent geologic events such as the formation of
the Mediterranean Sea due to the breaking of the
natural dam at the Strait of Gibraltar, and how
the geologic formation of the Isthmus of Panama
broke the free flow of the Atlantic Ocean into the
Pacific, causing large-scale climate change such
as turning the bulk of Africa from lush grasslands
into arid plains and further influencing evolution
towards tree-climbing mammals. Tyson further
explains how the influence of other planets in the
Solar System have small effects on the Earth's
spin and tilt, creating the various ice ages, and
how these changes influenced early human's nomadic
behavior. Tyson concludes the episode by noting
how Earth's landmasses are expected to change in
the future and postulates what may be the next
great extinction event.
QUOTES
"The goal isn't to make something everyone will
love; the goal is to get excited, and make a thing
where something wasn't before."
-Wil Wheaton
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