ELEPHANTS

Species of monkey previously unknown to scientists discovered in the Congo, 390 million-year-old mollusk reconstructed in 3-D, and spongy tissue found in human hearts also found in those of reptiles.

Stephen Hawking backs animal consciousness and a piece of amber discovered that contains 230-million-old mites.

Researchers from the University of Helsinki may be on the trail to the answer to an age- old question: why do dogs chase their tails?

Cloned horses may compete in future Olympic games, the valuable role wasps play in wine production, and a new study shows that monkeys notice when others make mistakes.

Echo and her family respond when their daughter is stolen.

The people who knew Echo best reflect on their great loss.

Echo died of natural causes at the age of 65 in May of 2009.

Get a sneak peek at what's coming up on NATURE. Season 29 begins on September 26, 2010 with the premiere of "Cuba: The Accidental Eden."