Insect-size robot weapons could render humanity extinct

Despite being just the size of an insect, tiny military weapons being developed by the military have the incredible power of hundreds of tons of TNT. In a new book, Louis del Monte, a physicist from Minnesora warns that these tiny weapons - dubbed'nanoweapons' - could lead to the most destructive world war yet which could spell the end for humanity. And this isn't just a long-term worry, as Mr del Monte has warned that the tiny weapons could render humans extinct by the end of the century. Nanoweapons have a 1 in 20 chance of causing human extinction by the end of this century. Terrorists could get their hands on nanoweapons through the black market as early as 2020.