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b'Joe Hanson is a scientist who hosts PBS Digital Studio\\u2019s It\\u2019s Okay to Be Smart and Hot Mess, a new YouTube show about climate change. He\\u2019s been a longtime friend of Tumble\\u2019s, so it was a no-brainer to ask him to help answer listener questions!\\n\\nJoe tells us why penguins can\\u2019t fly, how animals breathe underwater, what\\u2019s beyond the universe, and why our teeth get wobbly and fall out. Plus, find out what we think Tumble: Aquatic Edition would sound like!\\n\\nWatch some of our favorite of Joe\\u2019s videos on our website: sciencepodcastforkids.com/blog.\\n\\nDon\\u2019t forget, a great way to support Tumble is to pledge on Patreon. You can also tell five friends about the show! Either way, we\\u2019ll love you.\\n\\nWe\\u2019ve got a special offer for you to try KIND Kids Bars! Go\\nto KindSnacks.com/science and enter code SCIENCE at checkout to receive 20% off\\nof your order of KIND Kids Bars.'