Residents in Kansas who use private wells face uncertainty about what’s in their water.
Scientists have sequenced the genome of the new coronavirus from two patients in Washington state.
If COVID-19 spreads in the U.S., hospitals have ways to prepare. Public health experts explain why more testing and protecting healthcare workers will be key.
As swarms the size of cities devastate food supplies, both residents and experts in East Africa are looking for solutions to the locust pest problem.
Changes in how countries are diagnosing infection with the coronavirus can make shifting numbers difficult to interpret.