The Nobel Prize in Chemistry will be shared by three scientists for their work on how cells repair damage to DNA. They have discovered DNA damage can lead to mutations, which in turn can lead to cancer.
The World Health Organization has revised its guidelines to say that every person infected with HIV should now be given powerful anti-AIDS drugs. But many countries in Africa have struggled to meet previous less-ambitious WHO treatment targets.
For this month's Environmental Outlook: Ten years ago, Israel experienced a prolonged drought that forced the country to come up with a strategy to address water scarcity. What its experience could teach an increasingly water-starved planet.
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