Robert Downey Jr. and Rachel Kropa discuss MEATLESSNESS with Eben Bayer, an entrepreneur who's spent nearly 14 years proving the power of the humble mushroom as the world’s FIRST truly functional food. As the chief executive and founder of Ecovative Design, Bayer has made replacements for foam packaging, lamps and furniture, leather materials and importantly meats like bacon from mighty mushroom mycelia. Hear how the fungus among us could be just the thing to feed the world.