TED Talks Daily TED Audio Collective

Taking cues from soft robotics and the natural world, conceptual artist Anicka Yi builds lighter-than-air machines that roam and react like autonomous life forms. Her floating "aerobes" inspire us to think about new ways of living with machines -- and to ponder how they could evolve into living creatures. "What if our machines could be more than just our tools, and instead, a new type of companion species?" she asks.

Everyone has the right to a clean environment -- but major disparities exist when it comes to who faces the consequences of pollution. Environmental justice leader Peggy Shepard points to the disproportionate impact that hazardous environmental conditions have on Black, brown and Indigenous communities and challenges us to build a truly equitable future that turns "sacrifice zones" -- where community health is sacrificed for the sake of development -- into "green zones" that redress the legacy of pollution and harmful policies.

What can you hear in silence? In this exploration of sound, host of the podcast "Twenty Thousand Hertz" Dallas Taylor tells the story of arguably the most debated musical composition in recent history -- composer John Cage's iconic piece 4'33" -- and invites you to take notice of the soundscape around you. Watch to the end to experience a performance of 4'33''.

Plastics are everywhere -- they're in our favorite electronic devices, they package our food and insulate our homes. Today, the total mass of plastic is twice the total mass of all living organisms on the planet, and it's starting to change the processes that allow the Earth's climate system to work. Plastic pollution researcher Patricia Villarrubia-Gómez breaks down the consequences of producing all of this plastic at every stage, from fossil fuel extraction to the disposal of single-use plastics in landfills and oceans. The first step to breaking free of our plastic problem is admitting we have one.

What can you do to build a better world? Sharing stories from her pioneering career dedicated to tackling poverty, Jacqueline Novogratz offers three principles to spark and sustain a moral revolution. Learn how you can commit (or recommit) to creating big, positive change in your lifetime -- and give back more to the world than you take from it. "It is in the darkest times that we have the chance to find our deepest beauty," Novogratz says.

On a list of the least funny topics imaginable, the global refugee crisis, border disputes and questions of citizenship are probably close to the top. And yet comedian Maeve Higgins has spent her career finding ways to make jokes about (and make sense of) the ways we draw lines across the globe. She's a stand-up comedian and writer who speaks from the point of view of an Irish immigrant in the United States. In this excerpt from How to Be a Better Human, a TED Audio Collective podcast hosted by Chris Duffy, Maeve talks about ways we can find funny and eye-opening vantage points to look at the realities and borders of the world, our place in it and how imagination and laughter can help us through tough times. We asked Chris to select a book that he thinks explores these topics more deeply, and he selected "There There" by Tommy Orange. Listen for his recommendation and why he thinks it's "like the best action movie and one of the smartest sociological and historical essays paired together." This episode is part of the TED Talks Daily summer book club, a series featuring talks and interviews to inspire your next great read.