Embedded Files
Why is there a gap between the pledges made to combat climate change and delivery of a reduction in greenhouse gases? Amol Rajan and guests Rethink Climate Change.
Over c1000 years, global temperatures rose more than 5 C on average and stayed that way for c100,000 years more, with the surface of seas in the Arctic being as warm as those in the subtropics. There were widespread extinctions, changes in ocean currents, and there was much less oxygen in the sea depths. The rise has been attributed to an increase of carbon dioxide and methane in the atmosphere, though it is not yet known conclusively what the source of those gases was. One theory is that a rise in carbon dioxide, perhaps from volcanoes, warmed up the globe enough for warm water to reach the bottom of the oceans and so release methane from frozen crystals in the sea bed. The higher the temperature rose and the longer the water was warm, the more methane was released. Scientists have been studying a range of sources from this long period, from ice samples to fossils, to try to understand more about possible causes.
Global Optimism was founded by Christiana Figueres and Tom Rivett-Carnac after leaving the UNFCCC, having secured the historic, unanimous signing of the Paris.
The organisation produces a series of podcasts on Climate Change to, in their words, " inspire and catalyse stubborn optimists around the world, to rise to the next level of our abilities, because it’s necessary to do so, and because together, we can"
Can be some interesting material if you stick with it. the series on the future of transport is interesting if you are happy to put up with the chat
Page updated
Google Sites
Report abuse