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Nanoparticles’ unique properties could dramatically change the way we understand and treat the brain and its diseases. NOVA Next contributor Teal Burrell

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reports the story.

Would you remove an organ to reduce cancer risk based on the results of a genetic test? Women predisposed to ovarian cancer are facing that difficult decision. Freelance journalist Charlotte Huff reports the story, originally published in Mosaic .

In other news from NOVA and around the web:

Stain of a mucinous ovarian tumor

Did you miss "Deadliest Tornadoes" this week? Watch it streaming online.