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; a record low in Arctic sea ice reported; and a newly-discovered amber 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 died of natural causes at the age of 65 in May of 2009, leaving the family she had cared for and guided for so long to face the worst drought ever recorded in Amboseli on their own.

(Premieres Sundays April 4 and April 11) New technologies reveal what's behind incredible "moments of impact" - when animals come into contact with each other and the world around them.

More than 15 years ago, Martyn Colbeck began to document the lives of African elephants. He has grown close to elephant matriarch, Echo, and her close-knit family.

Joy, anger, grief, love -- all reside within elephants. Through years of research, scientists have found that elephants are capable of complex thought and deep feeling.

Human lives have been influenced by animals in matters that reach far beyond the food chain. In surprising ways, animals help teach, heal, and strengthen people -- in body, mind, and spirit.