There’s an ecological crisis off the coast of Northern California: Purple sea urchins are invading and destroying kelp forests on the seabed. Climate change and other factors have allowed the urchins to flourish, putting countless other species, which rely on kelp forests, at risk.» Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a …

Wind gusts of 35 mph could prevent the parade’s large balloons from being marched across Manhattan. #ThanksgivingDayParade #Macy #Manhattan WATCH FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight ALSO AVAILABLE TO WATCH ON HULU: https://hulu.tv/2pW9Vh1 #WorldNewsTonight #DavidMuir #ABCNews source

At least 10 animals were killed in a fire at the African Wildlife Park in northern Ohio. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly News, Meet the …