Olivia Ries was just seven years old when she and her eight-year-old brother Carter adopted a cheetah（猎豹） in South Africa. 

"When my sister and I first learned back in 2009 that species like the cheetah may be extinct in the wild by the time we have kids，it scared us. We knew we had to do something to help them，"says Carter. "There are so many people （young and old alike）who just don't know what is happening to so many species，just like we didn't. Olivia and I want to make sure we reach as many people around the world as possible and help them to understand how serious the situation really is."

To do that ， the kids started One More Generation（OMG），an organization with the motto："Preserving endangered species for one more generation and beyond."

Now，many years later，Olivia and Carter have traveled all over the world spreading their message. They've been interviewed on national television，participated in marches and fundraisers and won awards for their work. In 2015，they were invited to Vietnam by the United States Embassy to participate in a programme to save rhinos. All that they've accomplished for animals and the environment is much too long to list!

"Our number one message to everyone we meet is‘Remember，anyone can make a difference...if we can，you can too'，"says Olivia."We want all people to understand that what Carter and I are doing is not necessarily something special；it is something that we all should be doing. You can start small by simply adopting an animal. Do some research on the species you are interested in，and find a good organization offering adoptions. My brother and I take our birthday money and allowance money and adopt animals all the time. "