21/09/2021

Canada's nitrogen footprint shows great regional variation

Reactive nitrogen emissions contribute to greenhouse gases, as well as air and water pollution. For the first time, researchers from McGill University have calculated Canada's nitrogen footprint (akin to a carbon footprint) ...

Maya rulers put their personal stamp on monumental complexes

Early Maya cities featured monumental complexes, which centered on a shared form of religion but these complexes transformed radically once kingship emerged in 400 B.C. To solidify their power, rulers throughout the Maya ...

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