Nethemas the Great writes: Every 20 minutes someone somewhere is hurt or killed by a landmine. In Africa Hero Rats are being trained up to tackle the task of detection. Traditional methods using metal detectors can hit on anything from sardine cans to nails and still miss the plastic cased mines. In each case though they have to be treated as if they're the real deal. The hero rats however, sniff out the explosives with a sense of smell roughly 1 million times stronger than a human and can clear a 100 square meter area in just 30 minutes. What's more unlike their human counter part these guys are so light they don't accidentally set off the mines.