UN COP19 Climate Change Conference in Warsaw As evidence grows suggesting that global warming is accelerating, more climate change talks take place in Warsaw. Negotiators are still poles apart. In addition to melting Arctic ice and Alpine glaciers, scientists see the impact in extreme weather, and effects on wildlife and ecosystems. The COP19 climate change conference in Warsaw comes after last year's talks saw little progress on a Green Climate Fund - aid from developed to developing countries. And how can the EU slash CO2 by 20 percent by 2020, when some countries are reluctant to cut vehicle emissions and coal plant emissions? In this edition of The Network, we're joined for a lively debate on climate change by our three guest personalities: Bas Eickhout, a Green party member of the parliament's Environment Committee; Christiana Figueres, Executive Secretary of the United Nations Framework Convention on Climate Change (UNFCCC), which is leading the climate talks; and Sebastian Lüning, climate change skeptic and senior geologist at the German energy company RWE. Sebastian's book "Die Kalte Sonne" (The Cold Sun), blames global warming on the sun and ocean cycles.