Changes to the bacteria that live inside all of us are responsible for increasing the number of people with allergies, suggests new research. In this episode of Horizon, the show investigates this claim by conducting a unique experiment with two allergic families in order to find out just what it is in the modern world that is to blame. With a raft of mini cameras, GPS units an...
美国纪录片
布恩·史密斯
Steve,Gleason,Mike,Gleason,Scott,Fujita,Mike,McKenzie,Michel,Varisco-Gleason,Paul,Varisco,Jr.,Vinnie,Varisco,Ryan,Gootee,Paul,Varisco,Sr.,Brendan,Weber,Kyle,Gleason,Gail,Gleason,Jill,Varisco,Kevin,Dedmon,Rivers,Gleason
Sarah Chaney,Leroy Edwards III,马修·莫迪恩,肯·维勒
贝拉唐娜,马龙·白兰度,埃尔顿·约翰,茱莉亚·路易斯-德瑞弗斯,麦当娜,史蒂文·索德伯格
美国纪录片
