Watch Clip
Virginia McKenna Visits Elsa's Camp
2m 56s
"Born Free" star, Virginia McKenna, returns to Elsa's camp.
NATURE brings the beauty and wonder of the natural world into your home, becoming in the process the benchmark for natural history programs.
Video description: Titanosaurs were the world's largest dinosaurs, weighing as much as 100 tons by some estimates. In order to push blood around such massive bodies, they needed an enormous heart. A yet-to-be named species, found in the deserts of Argentina, may have had a heart that weighed over 500 pounds and was six feet around.
Check out the new streaming service from Cascade PBS, which pairs your PBS favorites with an ever-growing selection of TV series and films from around the world. Enjoy dedicated mobile and TV apps.