John Hancock Tower E News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Effects are this bad, what good can come out of it? >> reporter: questions now facing health officials and millions of kids headed back to school kristen dahlgren, nbc news just ahead tonight, our nbc news exclusive. inside the tsa's new warning to travelers that starts today about the new i.d. you'll soon need to fly. you'll want to see this story also the mystery in the wild caught on camera what's causing these endangered animals to behave so strangely. and 100 years young. the big birthday celebration for the nun and good luck charm who is inspiring america. we hope you'll stay with ...

Pregame prayers and calming court side presence made her as popular as any player, inspiring t-shirts, socks, even bobbleheads. >> she is an icon. >> everyone loves sister jean. she lights up any room she's in >> reporter:od made of more than 10,000 plastic bricks. >> we decided to build sister jean because she is an icon in chicago. we kind of hold her up there with the john hancock tower.e to a nun who her community. joe fryer, nbc news. >> a pretty cool gift. and happy birthday, sister jean. that's "nightly news." i'm lester holt. thank you for have you ever b on in a nonconventional way? >...

Florida's fish and wildlife agency sharing this video of a panther and bobcat struggling to walk, stumbling, then falling. their hind legs virtually useless. >> my best guess is these animals have ingested some type of toxin. >> reporter: authorities have confirmed two cases of neurological damage to these big cats trail cameras show at least nine others, mostly kittens, hobbled with similar symptoms with fewer than 200 florida panthers estimated in the wild, they're protected by dete ine what's species crippling the cats experts are testing fo various potential toxins as well as infectious di...