Cristina Zenato arrived in the Bahamas to do a couple of months of diving - more than 28 years later she's still there, and is now known for her passion for helping sharks. While she's met and helped all kinds, from Hammerheads and Tiger sharks.
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At a relatively unknown waterhole, a baboon begins to notice that various animals are going missing.
Almost everywhere is over 30 C and some places in the south are even reaching 50 C.
Life begins once again as the sun is heating all in the Iberian Peninsula.
The time of stillness and silence has come, but most animals aren't able to hibernate.
A history of the nation's first transcontinental railway accompanies a steam-train ride through the Canadian Rockies.
Between a jagged cliff face and a roaring ocean, lives a colony of Australian Sea Lions. In an environment equally harsh and beautiful, be immersed in a classic tale guided by one of Australia's unique, intelligent, and playful animals.
The crucial role of ice in the northern regions of the world.
Animals travel more than 500 miles across the Serengeti plains in Tanzania and Kenya.
Nigel seeks out deadly snakes from the wetlands of the Rio Grande to the Amazon rainforest.
Examining the most poisonous and deadly snakes in the archipelago of the Philippines.
Whale Sharks are the gentle giants of the Shark family, stretching 18m or 59 feet, they are filter feeders and inhabit warmer waters. Dr. Mark Meekhan and his colleague Christine Barry have been studying these majestic creatures in the Ningaloo Reef.
Cristina Zenato arrived in the Bahamas to do a couple of months of diving - more than 28 years later she's still there, and is now known for her passion for helping sharks. While she's met and helped all kinds, from Hammerheads and Tiger sharks.
Over the last fifty years, the wells catfish has colonized most of Europe's rivers.
Recent studies reveal that the Mayas may have been victims of a cataclysm.
A look at stories about things that seemingly went missing on Earth.
A look at the Bronze Age, which encompasses almost 2,000 years of history.
A look at humanity's documenting of belief systems and illuminating observations.
A look at the brilliant geometric shapes and exceptional megalithic sites across the Earth.
Fearsome predators: owls; leopards.
Examining some of the animal kingdom's fastest sprinters and cleverest species.
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