panic on the new orleans parade route. one dead, four injured. a gunman opened fire. new orleans mardi gras back to pre-pandemic levels. but the police force watching this city is not. norah: breaking news, an arrest in connection with the murder of a catholic bishop shot at home. a woman killed in an alligator attack at a florida retirement community. actor richard belzer, also known as detective john munch on law & order: special victims unit has died. now, what i have to say tonight doesn t come from here. it comes from here. norah: good evening to our viewers in the west and thank you for joining us as we begin a new week together. tonight cbs evening news goes in-depth with a look at how americans are exposed to chemicals in our food. plus, the story of two 81-year-old best friends who are in the middle of a once-in-a-lifetime trip around the world. but first, the big story, the top-secret and historic trip. president biden to ukraine. security was
concerns about united states joint military drills with south korea. panic on the new orleans parade route. a gunman opened fire. mardi gras back to pre-pandemic levels. e policeorbr n an arrest in connection with the catholic bishop shot at home. woman killed in an alligator attack in a florida retirement community. what i have to say tonight doesn t come from here. it comes from here. norah: good evening and thank you for joining us as we begin a new week together. tonight cbs evening news goes in-depth with a look at how americans are exposed to chemicals in our food. plus the story of 281-year-old best friends who are in the middle of a once-in-a-lifetime trip around the world. first, the story, the top-secret historic trip. security was tight as it was the first time in modern history that an american president traveled to a war zone where there is not a u.s. military presence on the ground. president biden s motorcade slipped out of the white house at
show us how some of these gradients may be linked to cancer and other health related issues. reporter: from baguettes to the contract, europe is famous for its bread. but one ingredient is missing. potassium bromate is a suspected carcinogen that s band for human consumption in europe as well as china and india but legal in the u.s. where it s used by some food makers to strengthened out and estimated to be present in over 100 products. there is evidence that it may be toxic to human consumers, they may even either initiate or promote the developers of tumors. reporter: professor erik millstone is an expert on food additives and told us european countries take a much more cautious approach to food safety. can we say for sure that these differences in regulations mean that people in the u.s. have developed cancers that they
a mountain of rubbish. the nile is the lifeblood of egypt and vital for the irrigation of its farmland. but the river and its countless canals have become severely polluted and full of trash over time the plastic breaks down into ever smaller pieces. the micro particles enter the water supply ending up in crops and in fish and then in their human consumers. some air is a fisherman working on the nile. he knows firsthand about the problems pollution causes. if you have to get them in the model but i think that because then when i m out on the water i see lots of plastic bottles and other containers like that all of this rubbish tears up my net and it kills the fish to. shadi of dollar is an activist who takes very practical steps to clean the river and its banks. he
lifeblood of egypt and vital for the irrigation of its farmland. but the river and its countless canals have become severely polluted and full of trash over time the plastic breaks down into ever smaller pieces. the micro particles enter the water supply ending up in crops and in fish and then in their human consumers. some air is a fisherman working on the nile. he knows firsthand about the problems pollution causes. me to have to deal with that when i m older but i think that because then when i m out on the water i see lots of plastic bottles and other containers like that all of this rubbish tears up my net and they kills the fish to. chad the abdullah is an activist who takes very practical steps to clean the river and its banks. he also speaks out against the scourge of trash and pollution that takes