Old, boring: flat maps with mountains represented by regions that look kind of like coffee stains. New, fun: 3D-printed maps that allow students to touch the topography of the region they're studying.

Sightline Maps is currently raising money on Kickstarter, and for every $100 its starters kick in, a new school will have a year of access to their technology.

Climbing K2 is for wimps. 3D-printing a tiny version of K2 with the help of your teacher is for real tough guys.

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