Keyboard Access Tips

To play Witness - The Keeling curve you need to enable JavaScript. How?

Witness - The Keeling curve

How a young American scientist began the work that would show how our climate is changing. His name was Charles Keeling. He meticulously recorded levels of CO2 in the atmosphere.

How a young American scientist began the work that would show how our climate is changing. His name was Charles Keeling and he meticulously recorded levels of CO2 in the atmosphere. His wife and son remember him. Photo: John Giles/PA Wire

  • Broadcast on BBC World Service, 1:50AM Sun, 6 Jan 2013
  • Available until 12:00AM Thu, 1 Jan 2099
  • First broadcast BBC World Service, 9:50AM Wed, 2 Jan 2013
  • Categories
  • Duration 10 minutes

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.