Globally our emissions come from a handful of sources. The first is burning wood or charcoal for energy or burning crops in the field. This is one of the biggest sources at lower incomes, and a big contributor to indoor and outdoor pollution. Then we have emissions from agriculture, with the ammonia and nitrogen gases that come from manure and fertilisers. The next is burning fossil fuels for electricity. Then emissions from industry – the fumes leaking out of chemical plants, metal manufacturers and textile factories. Finally, we have transport – the cars we drive, but also the trucks, ships
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