In the last 50 years, two-thirds of all
polar bears have died due to climate change.
PERCY: Oh no!  What could have caused this?
PERCY: It couldn't be climate change. Climate change isn't that bad.
Shallow ponds like these exist across the
Arctic and are home to many organisms.
Not only can Percy not live in this pond, 
but the trillions of microorganisms that
depend on this and similar ponds for
survival are also dying out.
Due to damages in the ecosystem, 
Arctic ponds are drying up.
This is what Camp Pond looked like in 1979.
With the ponds not being an option, Percy
turns to the sea.
As atmospheric CO2 levels rise,
 more CO2 is absorbed by the ocean.
When CO2 combines with seawater, it forms 
carbonic acid and causes ocean acidification,
which, along with the rising 
ocean temperatures, threatens
corals, fish, and the global 
phytoplankton populations responsible
for producing half the world's oxygen.
Finally, we arrive at the 
western coast of the United States.
Here, a combination of 
increased temperatures and decreasing
water reserves makes wildfires more
common and severe.
As we can see, Percy the polar bear has died due to these harsh and extreme conditions,
which were caused, unsurprisingly, by climate change.
