Today on NOW with Dave Brown, environmental contributor Lawrence Gunther explains the carbon footprint of beef. Community reporter Elizabeth Mohler tells us about an upcoming Apple event that is seeking feedback from users who are blind and partially sighted. Nelson Rego of Cool Blind Tech describes the e-Guide Dog, a prototype for a navigational robotic dog on wheels. And, host Dave Brown competes against contestants Karen Magee and Mark Phoenix in another edition of our weekly news quiz. This is the May 11, 2021 episode.