Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.

Altweek 3913 Sunstones, knotted vortices and a zerog robot

Technology is all relative. We imagine there was a time when even the wheel was the latest must-have gadget. This week we straddle the past and the future of exploration technology to illustrate this point wonderfully. Two very different objects, both a marvel of their time. There are also two hat tips to the every impressive power of mother nature, too. Where else but alt-week? Exactly.

Filed under: Science, Alt