Hendrik Marius Jonkers - Self-healing concrete containing bacteria

Expensive, ugly, sometimes dangerous? I feel like there's a joke to be made there...maybe something about a mother-in-law...or a political opponent...something...

Let's put a pin in that and come back to it.

If we do put a pin into some of the self-healing concrete that Hendrick Jonkers is developing, that pin just might get cemented into place from the limestone-excreting bacteria.

Jonkers is up for a self-described "prestigious" European Inventor Award. Feel free to throw a few votes his way if you read this before June 4, 2015.