Should we fight climate change by re-engineering life itself?

Life has transformed our world over billions of years, turning a dead rock into the lush, fertile planet we know today. But human activity is currently transforming Earth again, this time by releasing greenhouse gases that ...

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.

Why have venture capitalists become so founder-friendly?

Companies backed by venture capitalists ("VCs") have a disproportionate influence on our economy; they provide funding to less than 0.25% of new businesses, but more than 47% of US companies that went public between 1995 ...

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