A new wireless device—lighter than a U.S. dime and shaped like a tiny chef's hat—can track the brain waves of animals as they move in natural habitats, opening doors to understanding complex behaviors ...

Banning sodas from school vending machines, building walking paths and playgrounds, adding supermarkets to food deserts and requiring nutritional labels on restaurant menus: Such changes to the ...

A large natural experiment in Catalonia shows that moving to areas with higher levels of air pollution is associated with weight gain in young children. The study, led by the Barcelona Institute for ...

SOMETIME around AD 1600, Galileo Galilei is supposed to have climbed to the top of the leaning tower of Pisa and dropped two cannonballs of different sizes and weights over the edge. The point was to ...

No ecologist designed the experiment. No one decided which stone vessels should sit beneath trees or out in the open. And no ...

The term 'natural experiment’ has a murky conceptual history in public health, with definitions ranging from naturally ...

Some of the most insightful — and now most celebrated — studies of such major social issues as minimum wages and immigration have seized on naturally occurring events. Pioneering efforts by three ...

The Nobel Memorial Prize in Economic Sciences was awarded Monday to David Card of the University of California, Berkeley, Joshua Angrist of the Massachusetts Institute of Technology and Guido Imbens ...