While progress has been made in replacing water pipes in Flint, Michigan, many residents say they still don’t know if their tap water is clean or not. Also, scientists are adding sensors to an underwater cable network to monitor changes in the ocean and quickly detect earthquakes and tsunamis.

America’s most-consumed fruit is at risk from a fungal disease. Researchers in North Carolina are on a mission to save Cavendish bananas. Also, birds move their vocal organs while they sleep, mimicking how they sing. Scientists have translated those movements into synthetic birdsong.