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Retinopathy. Illustration of a normal retina (left) and a diseased retina (right). The diseased reti
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Poverty rates have declined in the last 50 years, and the biggest decline has been for people 65 and ...
Aggregates are people who happen to be in the same place at the same time.
The energy set-point view that is the basis of many people’s thinking about hunger and eating.
People who are color-blind see colors differently. (a) Those with normal vision see the red leaves.