My family adores Catan, and it just so happens that there are numerous free files that allow you to create a fully 3D version of its board (this community is a gem, I swear). "Perfect!" I thought.

A microscope that cost less than £50 and took under 3 hours to build using a common 3D printer could be transformative for ...

Around 5,000 years ago, people in what is now Iran began turning dull stone into shining metal. By heating copper ore until it melted, they learned to pull liquid metal from rock, a skill that helped ...