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The latest climate talks have heard that emissions this year and last have increased - they fell in the 3 years previously.
Development of electric vehicles and energy generation with renewable technologies have helped reduce emissions, but it鈥檚 not enough according to the latest analysis. The growth of conventional energy generation using fossil fuels has dwarfed reduction from using cleaner technologies.

Ammonia pollution is a serious issue for health globally. New satellite observations are able to pinpoint sources from factories to chicken farms worldwide.

Changes in laws in the Amazon designed to make the conservation of forests in private hands easier could have the opposite effect. In a strange statistical quirk, if a state is successful in its conservation efforts more private forestry could be made available for development.

And the maths of Democracy, can analytical systems developed to help understand stem cell growth or the behaviour of social insects be used to help understand the function and dysfunction of political systems?
Researchers suggest such analysis could even be used to predict a change in political direction, in the run up to elections for example.

(Picture: Wind turbine, Credit: Getty images)

Presenter: Roland Pease
Producer: Julian Siddle