Bio art is an art form that uses living organisms, tissues, and biological processes to create artwork. Artists work in laboratories using techniques like biotechnology, genetic engineering, tissue culture, and cloning. Some examples include a cell-cultivated ear attached to an artist's arm, a microscope that converts light into sound to "hear" living cells, and cacti expressing human hair genes. Eduardo Kac is a prominent bio artist who has created works like fluorescent rabbits, genetically engineered flowers, and living installations that evolve over time in response to their biological functions and environments.