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.

Journey with Meg Ryan to the jungles of Thailand in search of the white elephant, a rare creature coveted by royalty -- and threatened by extinction.

NATURE explores the unusual problems created as the struggle to give Asian elephants a home is fought worldwide.

Both humans and animals seem to be hard-wired to find youngsters adorable. Baby Tales explores the reasons why the young play on our heart strings.

NATURE follows a venerated elephant trainer and several of his young trainees in their travels 1,500 miles from their homes in India.