Why Do People Get Grumpy When They Get Tired? Moosejaw Matt and Geoff-with-a-G answer your questions on this episode.Visit www.moosejawmatt.com and https://www.patreon.com/natureandscience4kids.
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Music and picture from pixabay.com. Sound effects from freesound.org.
Thanks to Yevhen Onoychenko and Dmitrii Kolesnikov for this year's theme songs.
