Felix Baumgartner is now safely back on Earth after chucking himself out of a space capsule floating 37 kilometres in the atmosphere. In case you missed it, you can see it here. It went smoothly. At the end you can see Felix’s mum crying, overwhelmed by emotion.
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Video. Myanmar, Liberia and the United States of America. Those are the only three countries left in the world that don't use the metric system. Ted-Ed traces the history of the metric system (thank you French Revolution) to show how important it is to have one universal measurement system for the world, what can happen when conversions go wrong (NASA crashing an orbiter into Mars), and what the future of the metric system will be (basing it off universal constants like the speed of light).
Look at the dog-hand. Look at it.