they are moved here
and placed on a specialized diet.
Over the next three to four months,
the cows gain an additional 180 kilograms
before they are shipped off to slaughter.
You're also probably wondering
about this glowing pool at the top there.
That gets its color from a unique
combination of manure, chemicals
and a particular type of algae
that grows in the stagnant water.
This is the Mount Whaleback iron ore mine
in the Pilbara region
of Western Australia,
a beautiful yet scary scar
on the face of the Earth.
Of the world's mined iron ore,
98 percent is used to make steel
and is therefore a major component
in the construction of buildings,
automobiles or appliances
such as your dishwasher or refrigerator.
This is a solar concentrator
in Seville, Spain.
So this facility contains 2,650 mirrors
which are arrayed in concentric circles
around an 140-meter-tall tower
at its center.
At the top of the tower,
there is a capsule of molten salt
that gets heated by the beams
of light reflected upwards
from the mirrors below.