BBC Dinos 24/7

A pregnant basilosaurus, an 18-metre, carnivorous whale which lives in the Tethys Sea, is forced to kill the young of a smaller whale to ensure the survival of her unborn calf.

Going back 25 million years to the time of the indricothere, which was the largest mammal ever to live on dry land, being seven metres high and weighing 15 tons! The only threat to an adult would have been the hyaenodon which was the size of a rhino and had jaws that could crush a rock.

The beginnings of mankind can be traced back 3.2 million years to Ethiopia and the advent of Australopithecus, a type of ape which, like humans, was bipedal. These early members of the human family faced many dangers, including the sabre-toothed cat, malaria, and the 14-tonne delnotherium.

Revealing the exotic, oversized creatures that inhabited South America one million years ago, such as the deadly smilodon, the largest of all sabre tooth cats.

Looking at the depths of the Ice Age, following a group of mammoths who have been forced to travel south with the advent of winter. On a dangerous journey across the Alps, many become trapped in bogs or fall victim to predators. However, their most formidable enemies are waiting for them on their return journey - Neanderthals.

Exploring Mongolia's Gobi Desert to determine whether dinosaurs exist in the present as birds. It is one of the harshest places on Earth with the biggest dinosaur graveyard.

Exploring the newfound remains of a dinosaur species considered the biggest carnivore in history, all while questioning whether they engaged in a fight against the Argentinosaurus.

The lives of cavemen were nasty, brutish and short, but somehow they evolved over 3.5 million years into Homo sapiens.

Two very different species compete for survival in Africa 2,000,000 years ago.

David Attenborough tells the story of the discovery and reconstruction in Argentina of the world's largest known dinosaur, a brand-new species of titanosaur. Measuring 37m long - close to four London buses put end to end - and weighing 70 metric tons, it now holds the record as the biggest animal ever to walk the earth.

The earth split in India 66 million years ago in a disaster that may have caused the end of the dinosaurs.

In 2000, scientists made a groundbreaking discovery, explaining how birds evolved from dinosaurs. However, a deeper investigation put a question mark over everything.

Journey back 40,000 years and discover the great beasts of the Ice Age with Professor Alice Roberts. Alice's Ice Age odyssey begins in the land of the Sabre-tooth, North America, a continent that was half-covered by ice, up to two miles thick. Yet, it also boasts the most impressive cast of Ice Age Giants in the world.

Alice ventures to the parts of the Northern Hemisphere, hit the hardest by the cold - Europe and Siberia. High in the mountains of Transylvania, a cave sealed for thousands of years reveals grisly evidence for a fight to the death between two starving giants, a cave bear and a cave lion. Yet Alice discovers that for woolly rhinos and woolly mammoths, the Ice Age created a bounty.

Even after thousands of years of ice crushing the Northern Hemisphere and temperatures of 20 degrees lower than those of today, many of the great giants of the Ice Age still walked the earth. It was only when the world had warmed up again that mammoths, woolly rhinos, sabre-toothed cats and giant ground sloths finally became extinct. Professor Alice Roberts sets off on her last voyage back to the

Journey back 40,000 years and discover the great beasts of the Ice Age with Professor Alice Roberts. Alice's Ice Age odyssey begins in the land of the Sabre-tooth, North America, a continent that was half-covered by ice, up to two miles thick. Yet, it also boasts the most impressive cast of Ice Age Giants in the world.

Alice ventures to the parts of the Northern Hemisphere, hit the hardest by the cold - Europe and Siberia. High in the mountains of Transylvania, a cave sealed for thousands of years reveals grisly evidence for a fight to the death between two starving giants, a cave bear and a cave lion. Yet Alice discovers that for woolly rhinos and woolly mammoths, the Ice Age created a bounty.

Even after thousands of years of ice crushing the Northern Hemisphere and temperatures of 20 degrees lower than those of today, many of the great giants of the Ice Age still walked the earth. It was only when the world had warmed up again that mammoths, woolly rhinos, sabre-toothed cats and giant ground sloths finally became extinct. Professor Alice Roberts sets off on her last voyage back to the

Once cast as B-movie dinosaurs, Central America's green iguanas are revealing complex social lives that offer fresh clues to prehistoric dinosaur behaviour.

Part 1/3. As life starts evolving in the oceans, our bizarre earliest ancestors battle against 3m long sea scorpions and giant carnivorous fish. Their ability to survive will determine the shape of life on Earth and whether humans will exist at all. As our amphibian ancestors struggle onto land the monsters they face are even more deadly.

Part 2/3. Millions of years before the dinosaurs, a world full of giant sabretooth reptiles and huge armoured herbivores was obliterated when global temperatures soared and vast deserts blanketed the land. As the environment recovered, populations of one species of tough reptile exploded until it alone dominated the planet, but its reign was short-lived.

Part 3/3. The struggle for survival moves onto land in the shape of early reptiles such as Petrolacosaurus. In the Carboniferous swamps, insects and arthropods have taken over and grown into giants, from the giant spider Mesothelae to millipede-like monsters. As the swamps dry up, the world becomes dominated by the first ever giant reptiles - the huge, sail-backed Edaphosaurus.

Scientists investigate the meteorite impact responsible for the extinction of dinosaurs. According to a theory, the event was triggered by a comet hitting the present-day Gulf of Mexico.

A journey to discover the legendary lost city of Piramesse, a magnificent ancient capital built 3,000 years ago by the Egyptian pharaoh Ramesses the Great. When it was finally rediscovered by early archaeologists, it opened up a bizarre puzzle because it was in the wrong place.