Climate: Corporate 'net zero' pledges lack credibility

Nearly half the world's biggest companies have pledged to erase their carbon footprints by around mid-century, but only a handful have credible game plans for doing so, climate policy research groups said Monday.

African smoke over the Amazon

The Brazilian rainforest is one of the world's few continental regions with clean air. However, this is only true during the wet season, when the concentration of particulate matter is very low. During the dry season, it's ...

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