As high demand for rhino horn continues to fuel illegal poaching, TechKnow investigates how science is fighting back. One of the latest and controversial strategies to stop the use of Rhino comes from a US bio-tech start-up in San Francisco called Pembient. Their 3D printer techniques will help manufacture horns that will eventually "pass" as the real deal. The company hopes to flood the market with fake rhino horn in order to stop the demand for the genuine product. Can fake rhino horn truly pass as the real thing? And can synthetic horn save the rhino from extinction? TechKnow visits Pembient's San Francisco lab, obtains their fake rhino prototype and tests them against a real rhino sample from an independent lab to see if the two match. - Subscribe to our channel: http://aje.io/AJSubscribe - Follow us on Twitter: https://twitter.com/AJEnglish - Find us on Facebook: https://www.facebook.com/aljazeera - Check our website: http://www.aljazeera.com/