Fight for Planet A: Our Climate Challenge

Scientists tell us that carbon dioxide levels in the Earth's atmosphere have been steadily rising since the 1800s but how do they measure these levels? Craig travels to a laboratory in Tasmania where some of the cleanest air in the world can be found, thereby acting as a baseline to compare with more polluted air in cities and other built up areas. Explain why CO2 levels started to rise in the 1800s. Describe two ways scientists measure CO2 levels from the past and present.

Craig challenges people to guess which country has the highest emissions per person and the results surprise many. Were you surprised? Why does Australia have such high levels of carbon dioxide emissions? How could we reduce our emissions as a nation? What changes could you make at home or at school?