Research briefs

A valley of broken houses and debris following the 2010 earthquake in Port-Au-prince, Haiti.
A volunteer network helps to monitor aftershocks and illuminate the country’s earthquake hazards.
MIND AND I/Shutterstock
A new study led by USGS and Costa Rican researchers demonstrates how Earthquake Early Warning using smartphone technology can be both inexpensive and effective for millions of people.
Crowd surgical mask to prevent COVID-19 transmission
The virus can probably never be globally eradicated, because of its presence in many animals (including cats and dogs) and because of incomplete vaccine coverage.