A 5-year-old boy gets a second chance at life, after his former preschool teacher decided to donate part of her liver to him. A nonprofit that wants to rid the oceans of plastic marks a major milestone. Kids experiencing homelessness get to celebrate their birthdays with epic parties. Neighborhoods across North America are using old newspaper boxes to swap free movies. Plus, would you eat chocolate that’s more nutritious and sustainable to make?  For some more goodness on Saturdays, sign up for CNN's The Good Stuff newsletter.  Learn more about your ad choices. Visit podcastchoices.com/adchoices