CO2 IN THE ATMOSPHERE © 2016 Paul Billiet ODWS
Mauna Loa Observatory, Hawai’i © 2016 Paul Billiet ODWS
Carbon dioxide a greenhouse gas © 2016 Paul Billiet ODWS
South Pole Data © 2016 Paul Billiet ODWS
Samoa data © 2016 Paul Billiet ODWS
© 2016 Paul Billiet ODWS www.aad.gov.au/default.asp?casid=2028 http://environment.newscientist.com/data/images/ns/cms/dn4121/dn4121-1_262.jpg
Levels during the last ice age © 2016 Paul Billiet ODWS
Out of the ice age © 2016 Paul Billiet ODWS
The hockey stick © 2016 Paul Billiet ODWS