Scientists in Mexico were the first to perform ultrasounds on giant manta rays to detect pregnancies. The researchers hoped to learn more about the life cycle of the largest ray species in the world.

I didn’t want to have to depend on a weather app to know when the storms are coming.

Known for tracking California wildfires, Watch Duty is moving beyond that mission. Millions of people are turning to it for help.

A lack of sirens and flood forecasting systems made the state’s Hill Country vulnerable to deadly floods last summer. That has changed.

Known for tracking California wildfires, Watch Duty is moving beyond that mission. Millions of people are turning to it for help.

© Joel Angel Juarez/Associated Press

A lack of sirens and flood forecasting systems made the state’s Hill Country vulnerable to deadly floods last summer. That has changed.

© Brandon Bell/Getty Images