Have you signed up for our newsletter yet? Keep up with the latest here: tedxtucson.com/

Have you signed up for our newsletter yet? Keep up with the latest here: tedxtucson.com/

Have you signed up for our newsletter yet? Keep up with the latest here: tedxtucson.com/

Have you signed up for our newsletter yet? Keep up with the latest here: tedxtucson.com/

Save the ocean, refuse plastics: Dianna Cohen for World Oceans Day: blog.ted.com/save_the_ocean/

"We need to make civics sexy again," says civics educator Eric Liu. "As sexy as it was during the American Revolution or the Civil Rights Movement." ted.com/talks/eric_liu_why_o…

We've all been told that we should recycle plastic bottles and containers. But what actually happens to the plastic if we just throw it away? Emma Bryce traces the life cycles of different plastic bottles. ted.com/talks/emma_bryce_wha…

A happy song about global warming, from Jill Sobule. ted.com/talks/jill_sobule_gl…

For photographer Mac Stone, the swamp is a national treasure. His message: get out and experience it for yourself. "Just do it—put your feet in the water... the swamp will change you, I promise." ted.com/talks/mac_stone_stun…

Nature’s beauty can be fleeting -- but not through Louie Schwartzberg’s lens. His stunning time-lapse photography, accompanied by powerful words from Benedictine monk Brother David Steindl-Rast, serves as a meditation on being grateful for every day. ted.com/talks/louie_schwartz…

Top climate scientist James Hansen tells his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future. ted.com/talks/james_hansen_w…

Jeff Kirschner created a global community that's eradicating litter one piece at a time. ted.com/talks/jeff_kirschner…

While rich countries can fight against rising oceans and dying farm fields, poor people around the world are already having their lives upended -- and their human rights threatened. Mary Robinson asks us to join the movement for worldwide climate justice. ted.com/talks/mary_robinson_…

Have you signed up for our newsletter yet? Keep up with the latest here: tedxtucson.com/

Diseases of the body garner sympathy, says comedian Ruby Wax -- except those of the brain. Why is that? With dazzling energy and humor, Wax, diagnosed a decade ago with clinical depression, urges us to put an end to the stigma of mental illness. ted.com/talks/ruby_wax_what_…

Trauma silences its victims, says Melissa Walker, but art can help those suffering from the psychological wounds of war begin to open up and heal. ted.com/talks/melissa_walker…

"We can all do something to prevent this mental health catastrophe," Daod says. "We need to acknowledge that first aid is not just needed for the body, but it has also to include the mind, the soul." ted.com/talks/essam_daod_how…

How to start a conversation about suicide: ted.com/talks/jeremy_forbes_…

Sangu Delle says: "Being honest about how we feel doesn't make us weak -- it makes us human." ted.com/talks/sangu_delle_th…

Through groundbreaking research and the lens of her own autism, Temple Grandin brings startling insight into two worlds. ted.com/talks/temple_grandin…