World renowned HIV researcher Joep Lange and dozens of other passengers on Flight 17 were heading to an international AIDS conference in Australia. Dr. Sanjay Gupta looks at the impact that their deaths will have on the global health community.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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