Blue and Green: Figures have been released that suggest global emissions of carbon dioxide from the energy sector stalled for the first time in 40 years without an economic downturn in 2014, giving hope that emission targets to avoid dangerous levels of climate change can be achieved. The International Energy Agency (IEA) states that global carbon emissions stood at 32.3 billion tonnes in 2014, unchanged from the preceding year. The organisation argues that figures suggest that efforts to mitigate climate change...