How does a traffic light detect cars?

The Batagaika crater (or, technically, megaslump) is a massive pit caused by thawing permafrost -- and it's only getting bigger. Learn what paleontologists have found there (and why geoscientists are worried about it) in today's episode of BrainStuff, based on these articles: htt ...  Show more

Investigating murders right here on planet Earth can be tricky -- how would it be handled in space? Who would even be in charge? Learn what current and future laws may apply in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/murdered-in ...  Show more

We often take traffic lights for granted, but regulating the flow of traffic takes a lot of planning and technology. Jonathan and Chris detail the technology behind traffic lights in this episode.

The history of traffic signals is way more interesting than you might think. Trust us. 

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This 2019 episode looks at a few of the moments in traffic light history that got us to where we are today, as well as what made them a necessity in the first placeSee omnystudio.com/listener for privacy information. 

Beep, Honk, Honk...Do you find yourself stuck in traffic more often than you would like to? Like it or not, traffic is a topic of conversation in our lives. In today's podcast and communication lesson, we will talk about traffic and learn useful vocabulary for such discussions.