Puzzle 28: Lumberjack

When thinking of the earliest humans we often think of the Stone Age, but you can only do so much with a stone tool. To make it really useful you need wood.

While there are some simple hand tools made just of stone, the real power comes from adding a handle. You can chop at things with a sharp rock, but think how much more power you get by adding a handle to make an axe. You can throw a rock to deter a predator, but look at how much more effective a spear is!

Nature: Wood — the vein that runs through human history