it was 60 percent of the forest were wiped out by a blit introduced from childa.ood to the earliest pion ear and wood for homes and children. >> light resistant chinese chest nut with the taller american version. these show promising ruments. but many are still suscept sibble to the disease. >> if is a fungus and starves the tree. researchers hope to use the best 15 to create the next generation. >> only thing we want from the chinese trees is the blightt resistance genetics. everything else we want from the american tree. >> there will be a small percentage of genetic material. and if the restoration program is successful. it will take several decades before the trees provide a source of lumber and a holiday delicacy. david lye lye miller. "eyewitness news". and he is the busiest man in the world. you know who he is. santa claus busy on a trip around the world and norad following his every move. that's next. my name is robin. i'm a wife, i'm a mom... and chantix worked for me. it's a medication i could take and still smoke, while it built up in my system. [ male