Number-crunching math models may give policy makers major headache

Mathematical models that predict policy-driving scenarios—such as how a new pandemic might spread or the future amount of irrigation water needed worldwide—may be too complex and delivering "wrong" answers, a new study ...

How to clean up New Delhi's smoggy air

An international study led by atmospheric researchers at PSI shows for the first time what portions of particulates in the air over northern India are especially harmful to health.

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