Dr. Margaret Chan is director-general of the World Health Organization. In her first major address on Zika, delivered Thursday in Geneva, she said: "Questions abound. We need to get some answers quickly."
Maxine Parrish, 18 months old, is one of the youngest people to enjoy a new bike lane in Denver last month. Two avid bicyclists argue that better bike infrastructure allows slower cycling and a wider age-range of riders.
RJ Sangosti/Denver Post via Getty Images
A painting of Louis Pasteur in his laboratory. The French chemist and microbiologist once said, "Fortune favors the prepared mind." A new report on pandemics bears a similar message.
Some health workers in Liberia had stopped using the protective gear that was part of the Ebola routine. The photo above is from 2014, when the epidemic was at its peak.
David P. Gilkey/NPR