Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.
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Related: indoor
Prev: It seems quite unlikely that any of these was an indoor temperature—a particularly chilly breeze is a more plausible explanation.
Next: To assess the impact of this indoor lifestyle, scientists looked at another mammal which builds structures for sleeping in – the chimpanzee – collecting samples from nests in the Issa Valley in Tanzania.
