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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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ScienceShot: Measles Transmission—As Seen From Space
8 December 2011 2:00 pm
Light punctuates the darkness in this satellite image of Niger and northern Nigeria. In a new paper in Science, scientists show that such pictures can help them explain and predict outbreaks of measles in the area. Researchers suspected that the seasonal surges in measles—a major childhood killer—were caused by people moving into Niger's cities at the start of the dry season, but they didn't have an easy way to quantify those movements. Researchers at Princeton University and Pennsylvania State University, State College, wondered whether they could use changes in nighttime light, both from electrical lights and fires, as a proxy for population density. It was an "off-the-wall idea," says Matthew Ferrari, one of the scientists, but it worked. In the paper, the team shows that upswings in brightness correlate well with measles outbreaks. Nighttime shots could find much wider use as an indicator of population density, the researchers say, for instance, in studies of economic development or during refugee crises.
See more ScienceShots.