Tue, 02 Dec 2008 14:44:54 GMT

In order to investigate the greenhouse gas effect in Europe, one has to measure the concentrations of CO2 from fossil fuels at different places all over the continent. This could be done with 14C tests of air samples, but the same types of measurements can also be carried out on plants that have absorbed CO2. To that end one would need plant material that is known to come from a specific region ...

Tue, 02 Dec 2008 18:28:27 GMT

The Environmental Protection Agency recently called for public comments on whether and how the agency should regulate greenhouse gas emissions under the Clean Air Act. This is the first step in a process that could have sweeping negative consequences for America’s farmers and ranchers.

Tue, 02 Dec 2008 13:01:39 GMT

Farming organisations have welcomed targets which would see Britain's greenhouse gas emissions slashed by a fifth.