A paper published in scientific journal Nature this week has reignited the debate about Global Warming, by predicting that the earth won't be getting any warmer until 2015. Researchers at the Leibniz Institute of Marine Sciences have factored in cyclical oceanic into their climate model, and produced a different forecast to the "consensus" models which don't.
But how will we know whether the earth is warming or cooling? Today, it all depends on the data source.
