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Art therapist Melissa Walker is using masks to allow service members with traumatic brain injuries express their deepest emotions and experiences, helping them and their loved ones.

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The million-headed dragon of online anger has a great mouthful of fire for parents who don’t vaccinate their kids. But such scolding misses the mark, alienating caring parents who just want their children to be safe.

Photo: Daniel Berehulak/Getty Images.

Catharine Young describes a visit to Liberia, where Ebola may be contained but the public health story has only just begun.

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Think about everyday services, and what comes to mind? Probably practical matters: housing, food, health, education. Artist Theaster Gates wants to add a new item to the list. He makes the case for why, really, beauty is the most important basic service.

Rob Knight | ideas.ted.com

In this excerpt from his TED Book, microbial researcher Rob Knight shares his — and other scientists’ — work to understand the human microbiome — and the key diseases in which it now seems that microbes may play a part, including inflammatory bowel disease, obesity, and allergies and asthma.

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For many of us, just hearing the word “stress” can shorten our breathing and raise our heart rate — but as psychologist Kelly McGonigal seeks to show, stress does not always have to be a negative.

Jamie Oliver. © Jamie Oliver Ltd, Photographer: Joe Sarah

Activist chef Jamie Oliver talks about the future of food.