Complex mathematical problem solved by bees (Travelling Salesman)

And again:

http://news.ycombinator.com/item?id=1840785

http://news.ycombinator.com/item?id=1835452

http://news.ycombinator.com/item?id=1834170

http://news.ycombinator.com/item?id=1833774

http://news.ycombinator.com/item?id=1831271

http://news.ycombinator.com/item?id=1830232

http://news.ycombinator.com/item?id=1829211 <- This one has comments