diseases

Environment

Google tracks flu trends through search

Google unveiled a new tool today, in collaboration with the U.S. Centers for Disease Control and Prevention, that estimates flu incidence though user searches and may be able to provide data on where and how flu is spreading.

Global Politics

South Africa and AIDS

South Africa's former leaders were criticized for downplaying the AIDS epidemic there. Now a new president and a new health minister are taking a different approach to fighting the disease. Rhoda Metcalfe reports on The World.

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