Why wildfires have gotten worse -- and how we can stop them | Paul Hessburg
Megafires, individual fires that burn more than 100,000 acres, are on the rise in the western United States -- the direct result of unintentional yet massive changes we've brought to the forests throu...
7 Nov 201714min
I survived a terrorist attack. Here's what I learned | Gill Hicks
Gill Hicks's story is one of compassion and humanity, emerging from the ashes of chaos and hate. A survivor of the London terrorist bombings on July 7, 2005, she shares her story of the events of that...
7 Nov 201710min
For the love of birds | Washington Wachira
From the glorious crested guinea fowl to the adulterous African jacana to vultures that can pick a zebra carcass cleanin 30 minutes, Washington Wachira wants us all to get to know the marvelous specie...
6 Nov 201713min
How we can end sexual harassment at work | Gretchen Carlson
When Gretchen Carlson spoke out about her experience of workplace sexual harassment, it inspired women everywhere to take their power back and tell the world what happened to them. In a remarkable, fi...
6 Nov 201714min
The global learning crisis -- and what to do about it | Amel Karboul
The most important infrastructure we have is educated minds, says former Tunisian government minister Amel Karboul. Yet too often large investments go to more visible initiatives such as bridges and r...
3 Nov 201715min
Sci-fi stories that imagine a future Africa | Nnedi Okorafor
"My science fiction has different ancestors -- African ones," says writer Nnedi Okorafor. In between excerpts from her "Binti" series and her novel "Lagoon," Okorafor discusses the inspiration and roo...
1 Nov 20179min
How to win at evolution and survive a mass extinction | Lauren Sallan
Congratulations! By being here, alive, you are one of history's winners -- the culmination of a success story four billion years in the making. The other 99 percent of species who have ever lived on e...
31 Okt 20176min
Can we stop climate change by removing CO2 from the air? | Tim Kruger
Could we cure climate change? Geoengineering researcher Tim Kruger wants to try. He shares one promising possibility: using natural gas to generate electricity in a way that takes carbon dioxide out o...
31 Okt 20178min
