Global warming is one of the biggest environmental threats humanity will face
in the 21st century. Caused by an overabundance of the heat-trapping gas, carbon dioxide,
in the earth's atmosphere, global warming has caused changes in climate worldwide as well
as disruptions in habitats and wildlife. This short film was created by Leonardo DiCaprio.
To learn more, visit www.leonardodicaprio.org and www.leonardodicaprio.com