When her daughter GiGi was born with Down syndrome, CNN Hero Nancy Gianni decided to do something to help other families. Today, her nonprofit -- GiGi's Playhouse, Inc. -- has grown to 30 centers in the U.S. and Mexico and they've helped more than 25,000 children and adults with #downsyndrome reach their potential. Learn more at CNNHeroes.com | CNN Heroes

17K views · 165 reactions | Each year, an estimated 250,000 animals are hoarded in homes across the United States, often enduring horrific conditions. CNN Hero Tim Woodward is rescuing these animals and offering them a new start in life. Find out more about his Animal Rescue Corps at CNN.com/Heroes | CNN Heroes | Facebook

16 reactions · 3 comments | "It was the tipping point." CNN Hero Catalina Escobar on how being named a CNN Hero heped Fundación Juanfe. Get the full story: CNNHeroes.com. #CNNHeroes15 | CNN Heroes | Facebook