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100-word explainer: How microalgae produce nitrous oxide

Nitrous oxide (N2O) — a potent greenhouse and ozone-depleting gas — is rising at the fastest rate in 22,000 years. N2O correlates with the growth...
May 16, 2018
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100-word explainer: When is ozone bad?

In 1987, countries worldwide signed the Montreal Protocol to protect the depleting ozone in the atmosphere. Ozone/trioxygen (O3) is a gas that...