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Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and
People riding bikes in Netherlands
Children’s interactions with older siblings may help promote an understanding of other people’s ...
Older people who exercise cognitive skills, like these chess players, retain those skills well into ...
For millions of people, the United States represents a land of opportunity and freedom from ...
Ads from the public service campaign in the late 1960s and early 1970s that encouraged people to get ...