Khanmigo, an AI-powered online tutor, could change the way teachers work and students learn. Created by Khan Academy, the new technology is being piloted in 266 school districts.
Demand for mezcal was low for years, but interest and sales have soared. The vast majority of the spirit is made in Oaxaca, Mexico, where family-owned distilleries dot the landscape.
At least 19 Palestinians killed in stampede at Gaza food distribution site; Reporter's Notebook: A special day in history for America's scientific power
