I was in Cambodia a few years ago and it freaked me out somewhat when I was walking down a backroad in a small village out in the middle of nowhere, amongst kids playing soccer and people farming, and saw the skull-and-crossbone signs that warned of landmines. So this is only good news:

A Danish biotech company has developed a genetically modified flower that could help detect land mines ... The genetically modified weed has been coded to change color when its roots come in contact with nitrogen-dioxide (NO2) evaporating from explosives buried in soil.

Within three to six weeks from being sowed over land mine infested areas the small plant, a Thale Cress, will turn a warning red whenever close to a land mine.

How cool is that!