Scientists combine magnets with bull semen to create 'spermbots' (yes, really)

Oliver Schmidt's team at the Institute for Integrative Nanosciences in Germany has created a controllable spermbot. Not a word we'd ever think we'd be writing either. After adding cone-shaped nanotubes to bull sperm, Schmidt's team observed that when one swam into the wider end of the tube, it would become trapped, but with the flagella free, enabling it to carry on swimming.

via Tech News Headlines - Yahoo News http://www.engadget.com/2013/12/12/scientists-create-spermbots?ncid=txtlnkusaolp00000589