"The continuity field smoothes what would otherwise be a jittery perception of object features over time," says David Whitney. Without it,  faces and objects would appear to morph from moment to moment in an effect similar to being on hallucinogenic drugs, researchers say. (Credit: ThuyD/Flickr)
Top StoryUniversity of California, Berkeley

To keep us sane, brain ignores tiny visual changes

"Although the desire for personal happiness may be clear, the path to achieving it is indefinite," says Jennifer Aaker. "One reason for this hazy route to happiness is that although people often think they know what leads to happiness, their predictions about what will make them happy are often inaccurate." (Credit: postbear/Flickr)
Top StoryStanford University

For maximum happiness, pick concrete goals

"The isotope records really closely follow the atmospheric acidity trends," says Becky Alexander. "You can really see the effect of the Clean Air Act in 1970, which had the most dramatic impact on emission of acid from coal-fired power plants." (Credit: Joe Lodge/Flickr)
Top StoryUniversity of Washington

Ice cores show Clean Air Act eased acid rain

Featured Topics