Feed people, not garbage cans — talks on cutting food waste

“Every year, consumers in industrialized countries waste almost as much food as the entire net food production of sub-Saharan Africa,” reports the United Nations. These eight talks show the efforts people are making around the world to cut food waste [...]

The race to save frogs from extinction

Biologist Jodi Rowley worries that future generations will never get to hear the sound of a frog at night. One-third of frogs are at risk of extinction, Rowley explains at TEDxYouth@Sydney, and the world had already lost 200 species of [...]

Three TEDx Talks for the weekend: Hip hop, ant carpets, and Grindr advocacy

Hiding from the cold this weekend? Escape the autumn chill (or the election news) with these three talks from Chicago to Sydney: Hip Hop and Theatre: A Potential Symbiosis | Kori Alston | TEDxNorthwesternU “Theatre, as we know it now, is dying.” [...]

Why PrEP is a milestone in preventing HIV

When Raphael Landovitz was in medical school, he met a patient with a deadly infection due to complications from AIDS — who had no clue he was HIV positive. “He had clearly been HIV infected for a very long time, [...]

5 talks for Ada Lovelace Day

Today is Ada Lovelace Day, an opportunity to celebrate pioneering women in science, technology, engineering and math. The English mathematician worked with Charles Babbage to write the first computer program, before women in her country even had the right to [...]

What if we could clean wastewater with corn cobs?

Fifteen-year-old Lalita Prasida was in school when she realized that — in many places around the world — potable water is a luxury. “[In my studies] I found that there’s a lot of impure water around, rather than pure water,” she [...]