down to mass. not the original version of nutcracker is being performed in moscow. we will tell you the difference here. first, how you can help our 2017 top ten cnn heroes continue their important work and have your donations matched dollar-for-dollar. ♪ >> i'm anderson cooper. this year we are making it easy for you to support their great work. go to cnnheroes.com and donate to any top ten hero to make a direct contribution to that hero's crowd rise donation and your tax donation is tax deductible in the united states. no matter the amount you can make a big difference helping our heroes continue their life changing work.