Discover the evolutionary secrets of some of the world’s most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, WHEN WHALES WALKED follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.
The era of the sabretooth and many other Pleistocene creatures comes to an end. The biggest big cats ever, the lion and the tiger, become the kings of their respective habitats - but they had to fight for their place. To survive, these great cats target larger and more challenging prey.
Helen looks at the latest scientific insight into the aurora - dancing lights in the night sky that have fascinated cultures throughout our history. From the networks of cameras now capturing its vast scale, to novel experiments that probe the threat it poses to modern technology, Helen reveals the dramatic transformation in our understanding of the aurora, and the many mysteries that remain to be solved.
Going for a dramatic approach, this installment takes a look at the changing world of nature, from the sky to the sea to the sun to the insects to volcanic action to the planet itself. It's nature's strange and intricate designs for survival and her many methods of perpetuating life in this spectacular story. It takes a lot to make nature footage dramatic but here we are and it's quite a sight. It's exciting, beautifully shot and photographed, sometimes a little suspenseful, though it might not look like it at the start of it. Experience nature's Secrets of Life and witness the wonder of it all with this solid and visually splendid True-Life Adventure!
1956 • Nature