An artificial boundary is a boundary made by humans, examples include dams, the fence at the border between the U.S and Mexico. A natural boundary is a boundary made by nature, a boundary that happens naturally, examples include rivers, mountains and such.
Legends of Chima. Legends of Chima is a CGI animated television series based on the LEGO Legends of Chima series of LEGO sets. It began with 2 episodes airing on January 16, 2013, with the Season 1 finale on December 5, 2013. On March 15, 2014, season 2 premiered on Cartoon Network and ended on November 22, 2014.
The last new thing Futurama has seen was a crossover episode with The Simpsons called Simpsorama that was good but sadly has not done much to bring the show back. Last weekend four of the cast members came to Sacramento and helped make this convention one for the record books.