Valentine's heartsEven in French, they still taste like chalk. Photo: KatLevPhotoIn a live chat today, Grist’s Ask Umbra and TreeShagger answered all of your Valentine’s Day questions about sustainable love, dating, and (oh yeah!) sex. Did you miss the chat? Have no fear, dear, a replay is available below: 

http://www.coveritlive.com/index2.php/option=com_altcaster/task=viewaltcast/altcast_code=2d8e976bc0/height=623/width=615