There was a news that they are using something like methane and composted material and bacteria to produce a soft green light known as bio-light concept.
Yes, Philips have come up with a new concept known as Philips bio-light concepts. This concept is being designed to produce light with the use of bacteria. The system uses bio-luminescent bacteria that feeds on methane and composted material to produce a soft green light. The Bio-light could be powered on as long as there were a supply of nutrients, but the resulting light isn't bright enough to illuminate an entire room. Instead, Philips sees the Bio-light as more of an ambient light source, as well as a way to power night-time road markings, warning strips for planes and stairs, and more.
