elizabeth palmer in damascus tonight, and holly williams in istanbul, thank you, both. here at home, republican senators john mccain and lindsey graham criticized the deal saying it would just give president assad more time to "delay and deceive." democrat carl levin defended the deal, saying it did not limit u.s. aid to the opposition or block unilateral u.s. action. in colorado today, the death toll from floodwaters rose today as the state braced for more rain. least five people are now presumed dead. canyon communities north of denver have been affect the the most, and tonight, rescuers are still helping those stranded. rick sallinger was there. >> reporter: it was supposed to be a learning experience about the outdoors but these school children received an unforgettable lesson. they were reunited with their parents after being flown out of mountains on a chinook helicopter having survived an historic flight. >> the kids were amazing, pulled together, supported each other. they were helping cleaning up, setting up tables-- you name it, they did it. >> reporter: with

holly williams. >> each year millions die of colon colon cancer. getting a colon os skobpy every four years. >> doctors can do even better. >>> two days ago mike mcchrystal, a contractor in ohio had a colonoscopy that may have saved his life. >> i said i almost didable see it, so i'm not sure, you know what you're really looking for when you lyricing in there anyway. but he said, you know he almost missed it. >> reporter: colon surgeon dr. james church of the cleveland clinic performed the procedure. >> i found a flat lesion on the right side of his colon that's clearly precancerous in retrospect, easy to miss. i thought to myself boy, it's lucky i found that. >> reporter: co-onlonoscopyies save lives before they turn cancerous. polyps shaped like mushrooms are

margaret brennen is in geneva, elizabeth palmer in damascus of course, and holly williams in istanbulwe have stories of narrow escapes after record flooding. the race to clear a massive molasses spill in hawaii is threatening marine life and baffling cleanup crews. and fighting spirit-- terrell brown talks to a man from the front line of new jersey's board walk fire. >> the radio goes off, and we don't hesitate. captioning sponsored by cbs this is the "cbs evening news" >> glor: good evening, everyone. je

holly williams.' reporter: while mcdonald's meals may be happy, healthy has been anoth ♪ ham bergers, french fries, pop for you ♪ >> reporter: next year mcdonald's customers will be able to substitute fruit, salad, or a vegetable for french fries. >> the only pressure we have at mcdonald's that we fail to fuel is the customers. any business not doing that will be not be in business. >> reporter: the developies will be rolled out in countries including united states. advertising directing to children will feature nutrition messages. >> this is the first time a big player in the food business has made a commitment in the united states to change advertising directed at children. >> all right. pretty impressive. dr. jon, maybe one day when we think mcdonald's we'll hear gold crispy apples. do you like that idea? >> i do like that idea. they've had a real problem with the fact that so much junk food is marketed to kids. now for the very first time we're hearing a ceo of major company saying it's a business

holly williams.itiative and mcdonald's is getting a lot of attention. >> reporter: while mcdonald's meals may be happy, healthy has been another question for decades. ♪ ham bergers, french fries, pop for you ♪ >> reporter: next year mcdonald's customers will be able to substitute fruit, salad, or a vegetable for french fries. >> the only pressure we have at mcdonald's that we fail to fuel is the customers. any business not doing that will be not be in business. >> reporter: the developies will be rolled out in countries including united states. advertising directing to children will feature nutrition messages. >> this is the first time a big player in the food business has made a commitment in the united states to change advertising directed at children. >> all right. pretty impressive. dr. jon, maybe one day when we think mcdonald's we'll hear gold crispy apples. do you like that idea? >> i do like that idea. they've had a real problem with the fact that so much junk food is marketed to kids. now fo

holly williams. >> each year millions die of colon colon cancer.lon os skobpy every four years. >> doctors can do even better. >>> two days ago mike mcchrystal, a contractor in ohio had a colonoscopy that may have saved his life. >> i said i almost didable see it, so i'm not sure, you know what you're really looking for when you lyricing in there anyway. but he said, you know he almost missed it. >> reporter: colon surgeon dr. james church of the cleveland clinic performed the procedure. >> i found a flat lesion on the right side of his colon that's clearly precancerous in retrospect, easy to miss. i thought to myself boy, it's lucky i found that. >> reporter: co-onlonoscopyies save lives before they turn cancerous. polyps shaped like mushrooms are easy to find but flat polyps are easier to miss and much more likely to cause cancer. today's study shows it reduces the risk of a leftsided risk by 73%. it lowered it on the right side by 20%. >> you saw how subtle the flat polyp was. if you don't do a proper prep it gets covered by a prep. i know it's