This tutorial helps you to learn how to use Google docs spreadsheet with step by step examples.
The 3D printer at the International Space Station (ISS) has created the first printed object in space - a part of the printer itself - paving the way to future long-term space expeditions.
Forget stitches -- there's a better way to close wounds. In this talk, TED Fellow Joe Landolina talks about his invention -- a medical gel that can instantly stop traumatic bleeding without the need to apply pressure. (Contains medical images.)