Download Flash Player to view this content.
The National | Dec 4, 2012 | 2:31
Pond scum used to reduce carbon emissions
A company is using algae to reduce the carbon pollutants coming out of smokestacks. Margo McDiarmid reports.
The National | Dec 4, 2012 | 2:31
A company is using algae to reduce the carbon pollutants coming out of smokestacks. Margo McDiarmid reports.
Refresh
May 13, 2013 | 2:27The National Health and space travel Video
May 13, 2013 | 35:23The National Hadfield returns to Earth Video