What did you learn this week? Let us know in the comments or at education@ngs.org. This week, we learned … … how to sign the Declaration of Independence—in a founding father’s handwriting.     … how to cut the perfect slice of pizza. Or, at least, a much more complex one.     … giraffes did NOT evolve long necks to reach treetop greenery.   … Continue reading 13 Things We Learned this Week!