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The 2022 honoree is Cynthia Rosenzweig, whose computer modeling shows the impact on global crops. She talks about her "aha" moment, a big surprise in her findings and her plans for the $250,000 prize.

The search giant's push into artificial intelligence as a tool for health improvement is a natural evolution for a company that has developed algorithms that reach deep into our lives through the Web.

Pfizer and Moderna have refused to divulge details of how to make their cutting-edge COVID shots. Here's what two scientists — and longtime best friends — are doing about it.

Five years after Hurricane Maria, PRoTechos, a local nonprofit, helps repair damaged roofs the government overlooked or that were fixed poorly. It also trains people to make future repairs themselves.

A community of Indigenous peoples worried that mercury used by gold miners was contaminating the fish they eat. So they created a DIY team to find out more.

The 1984 killing of a woman near a busy Washington, D.C., street corner horrified the city and led to multiple convictions. Now the Mid-Atlantic Innocence Project and a determined lawyer are raising questions about whether at least one man was wrongly accused.

Kelp forests along Northern California have almost vanished. Divers and scientists are racing to stop purple sea urchins from taking over critical habitat.

Frustrated when Brazil could not get COVID vaccines, two Brazilian doctors (who have been best friends since college) decided to invent their own version and offer up the patent essentially for free.

Research conducted at the height of the 2020 election reveals new details about how Facebook's algorithms handle political content. But it suggests there are no easy fixes to political polarization.

Last month, the Muisyo family turned on the lights for the first time thanks to climate financing from rich countries. But the fund is falling short of its $100 billion goal to help poor countries.