What if we designed AI explicitly to advance social equality? Systems engineer Phebe Vayanos shares her research into AI that empowers vulnerable communities, focusing on her work to improve the system for matching people experiencing homelessness in Los Angeles with the city’s extremely scarce housing resources. Learn about the hard moral trade-offs of this work — and why more AI research should support the most underserved communities.

Throughout Earth’s history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps.

Is it possible that overfishing, super germs, and global warming are all caused by the same thing? In 1968, a man named Garrett Hardin sat down to write an essay about overpopulation. Within it, he discovered a pattern of human behavior that explains some of history’s biggest problems.