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right now more than 85 million americans are under excessive heat warnings and advisories and in the northeast, the heat forced organizers of the boston triathalon to postpone the event. new york city's triathalon will go forward as scheduled tomorrow but there will be changes to ensure safety of participants. cnn'sdoval is in new york with more on how the city is trying to keep people cool. >> reporter: you may say it is july, it is supposed to be hot. but meteorologists are saying by the time we finally get some relief here in new york possibly next week, new yorkers will have expe...

You may want to do if you come into contact with a shark, if you just do simple things, don't swim near river mouths, right, don't swim at dawn or dusk because sharks are typically c crepuscular hunters. don't bring something shiny which can trigger a shark's feeding response. don't crunch beer cans or soda cans in the ocean, because that can sound like to the shark like fish bones. if you educate yourself and make wise decisions when visiting the beach and going into the ocean, that will vastly reduce your likelihood of a shark encount her of er. if you have a shark encounter, if they get too...

When a snake -- the two motivations for a snake to strike is one being out of fear and b, responding to a feeding response. let's say the snake dropped out and considered to -- wanting to make one of the small boy as potential pray item. the snake would have to strike the child first and then wrap around. so what's unusual is it's odd to think the kid wouldn't react. i would scream like a little girl if i was bit by a snake this size. you would wake up and the snake would proceed to wrap around and really where the killing potential comes from is they use their missiles to push against the dia...

Of squeezing power. the odd thing that we're considering is that typically, when a snake -- the two motivations for a snake to strike is one being out of fear and b, responding to a feeding response. let's say the snake dropped out and considered to -- wanting to make one of the small boy as potential pray item. the snake would have to strike the child first and then wrap around. so what's unusual is it's odd to think the kid wouldn't react. i would scream like a little girl if i was bit by a snake this size. you would wake up and the snake would proceed to wrap around and really where the kil...

They don't have venom and a large african rock python 15 feet long will have quite a bit of squeezing power. the odd thing that we're considering is that typically, when a snake -- the two motivations for a snake to strike is one being out of fear and b, responding to a feeding response. let's say the snake dropped out and considered to -- wanting to make one of the small boy as potential pray item. the snake would have to strike the child first and then wrap around. so what's unusual is it's odd to think the kid wouldn't react. i would scream like a little girl if i was bit by a snake this si...