Thermal Delight

Why did it take nearly a decade to redesign a city trash can, and why haven't more bins made the streets cleaner? What infrastructure mystery keeps you up at night? Submit your Service Request by recording a voice memo with your question and emailing it to servicerequest@99pi.org ... Show More

This is the eighth episode of our ongoing series breaking down the U.S. Constitution. This month, Roman and Elizabeth discuss Article V, which lays out the process to amend the Constitution. Then, Jill Lepore lays out her thesis that the Constitution is truly meant to be amended, ... Show More

What the world's most advanced traffic system can—and can't—do for the city that invented gridlock. What infrastructure mystery keeps you up at night? Submit your Service Request by recording a voice memo with your question and emailing it to servicerequest@99pi.org. Service Requ ... Show More

Tim Harford tells the surprising story of air conditioning which was invented in 1902 to counter the effects of humidity on the printing process. Over the following decades “aircon” found its way into our homes, cars and offices. But air conditioning is much more than a mere conv ... Show More

Air conditioning aspires to be unnoticed. Yet, by manipulating the air around us, it quietly conditions the baseline conditions of our physical, mental, and emotional experience. From offices and libraries to contemporary art museums and shopping malls, climate control systems sh ... Show More

Global warming means the world will need a lot more air conditioning - but will the AC just make global warming even worse?The Middle East already experiences peak temperatures over 50C, as the Kuwaiti social media influencer Ascia Alshammiri testifies. And things are only set to ... Show More

<p>Air conditioners are a nifty -- and sometime life-saving -- invention, but how does an air conditioner make air cooler? What does a compressor do? What’s a swamp cooler? Tune in for answers to these questions and more in this episode of TechStuff.</p><p> </p> Learn more about ... Show More

<p><strong> </strong></p><br><p>It has gone from luxury to necessity, and there are over 2 billion air conditioning units in the world today.</p><p>In this episode, we'll take a look at how air conditioning got started, why people didn't mind being hot in the past, and what the t ... Show More

Air conditioning has had a profound impact on modern life -- and in more ways than you might realize. In this trio of Invention episodes, Robert and Joe explore pre-AC cooling methods, the invention itself and the many ways it changed the shape (and temperature) of our lives. Lea ... Show More

[Note: This episode was recorded before the wildfires in Canada spread out of control and reminds us how much human and planetary health are connected. We want to acknowledge the impact this event is having on the people of Canada and eastern U.S. and hope that everyone is stayin ... Show More

Two-million-year-old molecular fossils reveal flourishing woodlands and widespread animals in Greenland's pre-Ice-Age past, and give hints to the Arctic’s future under global warming. We hear from a molecular palaeontologist and a climate modeller.DNA also reveals the enduring ge ... Show More