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) ...

Environmental concerns grow as space tourism lifts off

After years of waiting, Richard Branson's journey to space this month on a Virgin Galactic vessel was supposed to be a triumphant homecoming. Instead, the jaunt attracted significant criticism—about its carbon footprint.

A greener Games? Tokyo 2020's environmental impact

Olympics organisers have pledged to prioritise sustainability at the Tokyo Games in an attempt to demonstrate how countries such as Japan—a top carbon emitter—can work towards a greener future.

Super-selective catalysts key to carbon conversion

Catalysts could prove to be the key to converting carbon dioxide and carbon monoxide into value-added products but their effectiveness depends on them being selective in how they work.

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