D e B T i s S l a V 3 r Y S T u P i D
DuBi0uSlY EnDoWs YoU WiTh
Cosmos.A.Spacetime.Odyssey.S01E12.1080p.BluRay.x264-DeBTViD
DVD.DATE.. 10 June 2014
RLS.DATE.. today
GENRE..... Documentary
LANG...... English
ViDEO..... 1920x1080
BiTRATE... 9638kb/s
FPS....... 23.976fps
ASPECT.... 16:9
AUDiO..... 1509kb/s 5.1 DTS
DURATiON.. 42m3s
SOURCE.... R1 BD
SIZE...... 71x50mb
SUBS...... English
IMDB: http://www.imdb.com/title/tt2395695/
RELEASE NOTES
This episode explores the nature of the greenhouse
effect (discovered by Joseph Fourier and Svante
Arrhenius), and the evidence demonstrating the
existence of global warming from humanity's
influence. Tyson begins by describing the long-
term history of the planet Venus; based on
readings from the Venera series of probes to the
planet, the planet had once had an ocean and an
atmosphere, but due to the release of carbon
dioxide from volcanic eruptions, the runaway
greenhouse effect on Venus caused the surface
temperatures to increase and boiled away the
oceans.
Tyson then notes the delicate nature of the amount
of carbon dioxide in the atmosphere can influence
Earth's climate due to the greenhouse effect, and
that levels of carbon dioxide have been increasing
since the start of the 20th century. Evidence has
shown this to be from mankind's consumption of
oil, coal, and gas instead of from volcanic
eruptions due to the isotopic signature of the
carbon dioxide. The increase in carbon dioxide has
led to an increase in temperatures, in turn
leading to positive feedback loops of the melting
polar ice caps and dethawing of the permafrost to
increase carbon dioxide levels.
Tyson then notes that humans have discovered means
of harvesting solar power, such as Augustin
Mouchot's solar-driven motor in the 19th century,
and Frank Shuman's solar-based steam generator in
the 1910's. Tyson points out that in both cases,
the economics and ease of using cheap coal and oil
caused these inventions to be overlooked at the
time. Today, solar and wind-power systems would be
able to collect enough solar energy from the sun
easily. Tyson then compares the motivation for
switching to these cleaner forms of energy to the
efforts of the Space race and emphasizes that it
is not too late for humanity to correct its
course.
QUOTES
"I've never quite believed that one chance is all
I get."
-Anne Tyler
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