Pathologist Dr. Benjamin Mazer talks about the changing FDA rules on donating blood for men who have sex with men.
A Malibu wildfire prompts evacuation orders and warnings for 20,000, including Dick Van Dyke, Cher
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From spiral galaxies to volcanic eruptions on Jupiter moon, see these amazing space images
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Texas wildfires map: Track latest locations of blazes as dry weather, wind poses threat
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