TED Radio Hour

Every twelve years, 100 million people descend upon a temporary city built for the Kumbh Mela festival in India. Architect Rahul Mehrotra says other cities can learn from this ephemeral megacity.

Thai landscape architect Kotchakorn Voraakhom designed a way to offset flooding in Bangkok by designing a park with underground tanks. She says her design can protect delta cities that are sinking.

Architect Marwa Al-Sabouni says French colonial design segregated Syria's cities and laid the groundwork for division and civil war. The future of the country may depend on how it decides to rebuild.

In the heart of urban Brooklyn, a 300-year old farmhouse still stands. Archaeologist Alyssa Loorya explains how artifacts found at the site trace the life cycles of New York City--from 1720 to today.

Fighting climate change is a big messy task that will take a lot of work. This hour, TED's Science Curator David Biello joins Manoush to share some promising and fascinating solutions.

Deep fakes are taking over the Internet—distorting our perception of what's real. Law professor Danielle Citron explains how deception online not only harms people, but also our democracy.

For the past few years, journalist Andrew Marantz has been embedded in the world of far-right extremists online. He explains how once-fringe conspiracy theories migrated into the national discourse.

Data, numbers, algorithms are supposed to be neutral ... right? Computer scientist Joy Buolamwini discusses the way biased algorithms can lead to real-world inequality.

As a deaf person, Rebecca Knill is anti-noise and "neutral" on sound. She explains how technology allows her to hear what she wants to hear, and asks why our mindset about ability hasn't caught up.

What can we discover when we allow ourselves to sit in silence and just... listen? Sound designer Dallas Taylor explores how tuning into silence is key for understanding the beauty of the sonic world.