In episode 75, thanks to an incredible suggestion from Zach from Philadelphia, PA, we get curious about construction trucks.  Why are bulldozers called bulldozers?  Can rollers crush a piano?  Learn about construction trucks with us.Roller Video (credit: National Geographic)https://youtu.be/JPETyyQuuAUSend Us An E-mail - curiouskidpodcast@gmail.comSupport Us On Patreon - https://www.patreon.com/CuriouskidpodcastShop Curious Kid Podcast Merchandise - http://tee.pub/lic/fqXchg3wUVUFollow Us On Facebook - https://www.facebook.com/curiouskidpod/Follow Us On Instagram - https://www.instagram.com/curiouskidpodcast/Follow Us On Twitter - https://twitter.com/CuriousKidPod