What’s a scientist to do, when you need to reach the highest leaves in the forest and a giant crane isn’t an option? Learn to use a crossbow. Kristen Goodhue Nearly every beech tree in Harvard Forest ...

How to Make an Awesome Crossbow that Shoots Pencils In today's video you will learn how to make simple crossbow from wooden ruler, cardbaord, popsicle sticks and rubber band. As arrows you can use ...