Don't panic, today is international #TowelDay honoring Hitchhiker's Guide author Douglas Adams! Tweet a picture of yourself with your hitchhiking towel to @engagdet along with the #TowelDay tag and we'll RT the best! Yes, of course you need to be not naked. As always, please share any great tech or science videos you find by using the #ICYMI hashtag on Twitter for @mskerryd.