Cutting down on excess packaging

Ardie may only be 13yearsold but he's already very impressive behind the wheel, driving a car that he and his grandfather built themselves using spare parts. Find out how he got started in racing and about his biggest competition yet, the Australian Junior Speedway Championship.

After a full year in space, scientists are studying Scott Kelly's body to find out how it's affected by so much time in zero gravity. With this research, they hope to be better informed for future longterm trips into space. Kelly looks like he had a lot of fun up there, he actually grew a bit taller and he worked hard to offset some of the impact being in zero gravity has on muscles.

When Maria Sharapova was suspended for using performance enhancing drugs, the sports world was shocked and immediately there was a lot of discussion about whether or not she was being truthful that it was an accident. But what is a performance enhancing drug anyway and how is it decided which substances are banned for athletes to use