. >> chris van cleave, abc 7 news. >> researchers are touting the new benefits of eating yogurt. pro bionics in a yogurt made mice slimmer. mice also make it faster and produce more offspring. reporters believe the study may get more insight into human fertility. >> it is the ultimate in flying luxury. the jetliner made a rare appearance in the d.c. area. we gotta sell the car. where would we even start? get the car. hi howard. get in. hi, good te o see you. start with an actual written offer when selling your car, no strings attached. carmax. start here. >> there is a spectacular site in the skies over d.c. earlier this week. >> on monday, boeing's 787 dream liner landed. it is on a tour making stops around the world. >> the boeing 787 the dream leiner, a crude first into dulles. >> we are looking at an airplane that will be the airplane other people will measure other airplanes against. >> it is made of composite material. it is leiter uses less fuel, is cheaper to operate, and is a lot quieter. >> this is a departure from how airplanes are built and how people will travel. >>