The Kuro (black) burger was a big hit in Japan in 2012. Now, Burger King has released a new version that takes it up a notch. Bamboo charcoal is added to the cheese to make it black, and squid ink is added to the sauce!

The Kuro (black) burger was a big hit in Japan in 2012. Now, Burger King has released a new version that takes it up a notch. Bamboo charcoal is added to the cheese to make it black, and squid ink is added to the sauce!

The Kuro (black) burger was a big hit in Japan in 2012. Now, Burger King has released a new version that takes it up a notch. Bamboo charcoal is added to the cheese to make it black, and squid ink is added to the sauce!

These aren’t your typical loos. One uses microwave energy to transform human waste into electricity. Another captures urine and uses it for flushing. And still another turns excrement into charcoal.