Luc Marescot

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From the tropical rainforest in Papua New Guinea to the Mongolian taiga, people from indigenous cultures worldwide are fighting to preserve their forests. Whether through reforestation in the Amazon rainforest or the fight against pollution of the boreal forest in Canada, the series shows in five episodes the great importance of forests for our planet.

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With the help of diver and biologist Laurent Ballesta, a scientific expedition explores three sunken Italian volcanic sites in the Mediterranean.

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To help Francis Hallé in his fight to save the last tropical forests, a documentary filmmaker with a passion for nature decides to make his first film: "The Botanist", an ecological thriller with Leonardo DiCaprio. He traces his path with malice, obstinacy, and discovers, with candor, the arcana of the seventh art. Even if he never gives up, will his film ever exist?

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Gombessa Expedition 4 Laurent Ballesta went to observe a gathering of thousands of groupers during the full moon of June 2014 (Le mystère mérou) in the southern pass of the Polynesian atoll of Fakarava, where he discovered a pack of over seven hundred grey sharks. How can this unprecedented density be explained? Could it be that social behaviors govern this wild horde? During three years of preparation, he and the other divers on his international scientific team tamed their fear by abandoning the defensive reflexes that provoke shark aggression, with the aim of slipping into the heart of the raging pack to study and film it from the inside. Sharks fitted with microchips, receiving antennas, hydrophones, an ark of 32 synchronized cameras...: a whole technological arsenal is mobilized for the project. As the groupers approach for their annual spawning, what battle plan will the sharks deploy?

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To help Francis Hallé in his fight to save the last tropical forests, a documentary filmmaker with a passion for nature decides to make his first film: "The Botanist", an ecological thriller with Leonardo DiCaprio. He traces his path with malice, obstinacy, and discovers, with candor, the arcana of the seventh art. Even if he never gives up, will his film ever exist?

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As the Arctic changes faster than ever, a team of polar bear guides prepares for an epic journey; a first-ever attempt to follow the bears on the sea ice of Hudson Bay. In this high-stakes high-reward venture, they will document the secret world of bears, a mysterious and disappearing realm that is the bears key to survival. Life on the ice is a critical time for these bears. It also remains undocumented, deemed too dangerous for humans to follow, hinted at only through aerial reconnaissance and satellite collar research. The team, armed with traditional ecological knowledge and the latest 4K camera technology, will witness never- before-seen seal hunting strategies and document rapid adaptations to climate change, including whale predation and open-water hunting.

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Gombessa Expedition 4 Laurent Ballesta went to observe a gathering of thousands of groupers during the full moon of June 2014 (Le mystère mérou) in the southern pass of the Polynesian atoll of Fakarava, where he discovered a pack of over seven hundred grey sharks. How can this unprecedented density be explained? Could it be that social behaviors govern this wild horde? During three years of preparation, he and the other divers on his international scientific team tamed their fear by abandoning the defensive reflexes that provoke shark aggression, with the aim of slipping into the heart of the raging pack to study and film it from the inside. Sharks fitted with microchips, receiving antennas, hydrophones, an ark of 32 synchronized cameras...: a whole technological arsenal is mobilized for the project. As the groupers approach for their annual spawning, what battle plan will the sharks deploy?

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