Women in low-income communities in India learn how to use energy efficiently. It’s a win-win for the climate as well as the household budget. For many it is the first time they understand the connection between fossil fuels and global warming.
The Kyoto Protocol, which created the first binding targets to limit greenhouse gas emissions, went into effect in February 2005. Some experts say it was a "game changer," but others question its long-term effectiveness.
Many countries have heating systems that still run on coal, oil and gas. But relying on these fossil fuels to keep us warm through winter adds to CO2 emissions. So what are some of the climate-friendly alternatives?
Coal and other fossil fuels remain lucrative despite the fact that investing in them is becoming increasingly risky. That's one reason some banks and global funds are backing renewables. Is this the start of a rethink?
A range of technologies — loosely defined as 'geoengineering' — are being explored as responses to climate change. Yet their effectiveness, and whether they should be implemented at all, is debated among scientists.
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