You don't have to be an expert to solve big problems | Tapiwa Chiwewe
Driving in Johannesburg one day, Tapiwa Chiwewe noticed an enormous cloud of air pollution hanging over the city. He was curious and concerned but not an environmental expert -- so he did some research and discovered that nearly 14 percent of all deaths worldwide in 2012 were caused by household and ambient air pollution. With this knowledge and an urge to do something about it, Chiwewe and his colleagues developed a platform that uncovers trends in pollution and helps city planners make better decisions. "Sometimes just one fresh perspective, one new skill set, can make the conditions right for something remarkable to happen," Chiwewe says. "But you need to be bold enough to try."
Refugees want empowerment, not handouts | Robert Hakiza
The prevailing image of where refugees live is of temporary camps in isolated areas -- but in reality, nearly 60 percent of them worldwide end up in urban areas. TED Fellow Robert Hakiza takes us inside the lives of urban refugees -- and shows us how organizations like the one that he started can provide them with the skills they need to ultimately become self-sufficient.
How to have a healthier, positive relationship to sex | Tiffany Kagure Mugo and Siphumeze Khundayi
From our fear of women's bodies to our sheepishness around the word "nipple," our ideas about sex need an upgrade, say sex educators (and hilarious women) Tiffany Kagure Mugo and Siphumeze Khundayi. For a radical new take on sex positivity, the duo take the TED stage to suggest we look to Africa for erotic wisdom both ancient and modern, showing us how we can shake off problematic ideas about sex we've internalized and re-define pleasure on our own terms. (This talk contains mature content.)
A life-saving invention that prevents human stampedes | Nilay Kulkarni
Every three years, more than 30 million Hindu worshippers gather for the Kumbh Mela in India, the world's largest religious gathering, in order to wash away their sins. With massive crowds descending on small cities and towns, stampedes inevitably happen, and in 2003, 39 people were killed during the festival. In 2014, then 15-year-old Nilay Kulkarni decided to put his skills as a self-taught programmer to use by building a tech solution to help prevent stampedes. Learn more about his invention -- and how it helped the 2015 Nashik Kumbh Mela have zero stampedes and casualties.
How to resolve racially stressful situations | Howard C. Stevenson
If we hope to heal the racial tensions that threaten to tear the fabric of society apart, we're going to need the skills to openly express ourselves in racially stressful situations. Through racial literacy -- the ability to read, recast and resolve these situations -- psychologist Howard C. Stevenson helps children and parents reduce and manage stress and trauma. In this inspiring, quietly awesome talk, learn more about how this approach to decoding racial threat can help youth build confidence and stand up for themselves in productive ways.