Sarah Laîné

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While Paris, the City of Lights, shines brightly, hidden in its shadows are fascinating installations, put in place nearly two centuries ago: the sewers. Even today, this 2,600-kilometer-long labyrinth of streets and infrastructure ensures the sanitation of the entire capital. In 1854, during Haussmann's grand urban renewal projects in Paris, the French engineer Eugène Belgrand undertook one of the century's largest construction projects: the renovation of the Paris sewers. His main innovation: an ingenious dual network that simultaneously treats wastewater and delivers drinking water to Parisians.

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The fascinating landscape formations of Iceland in the North Atlantic bear witness to the beauty and primal power of nature. They were created through the interaction of powerful volcanic, geological and biological processes that have been changing the face of the earth for billions of years. This is what the Earth might have looked like four billion years ago. Iceland is the realm of ice and fire. Nowhere else is there such a high density of volcanoes. The landscapes, which are continually reshaped by eruptions, make the island a natural laboratory full of clues about the formation and development of the earth. The documentary follows a group of scientists through the most active areas of Iceland, along a mountain range that has emerged from the ocean. On the slopes of the volcanoes, in the fog of the fumaroles and on streams and rivers, the three researchers explore how the first forms of life populated the earth's surface and in what evolutionary steps they took over the earth.

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In the heart of Athens, the vestiges of an ancient city have overlooked the capital for over 2,000 years: the Acropolis. Built in the 5th century BC, this sumptuous complex of temples and monuments remains the most extraordinary architectural work left to us by Ancient Greece. Thanks to CGI and explanations of the foremost international experts, discover the technical feats of Antiquity that allowed a rocky hill to be transformed into a monumental and immortal masterpiece. From the infallible anti-seismic systems to the techniques used to hoist blocks of marble weighing several hundred tons to the top of the hill, walk in the footsteps of the greatest engineers of Ancient Greece and discover their ingenuity, precision, and perfectionism.

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