National Geographic follows a team of architects, artists, contractors, city officials, and engineers as they construct a house using only scrap and salvaged materials.

Imagine a world where melting ice caps have raised sea levels by 20 feet and where great coastal cities could be under water. It is a worst-case scenario, but what is the scientific basis for the panic surrounding sea-level rise? Now, National Geographic separates fact from fiction to discover the real science behind climate change, the melting ice caps and why the intensity of tropical storms has increased by 50% in the past 30 years.

By the year 2100, many scientists believe that the Earth's average temperature could rise by as much as six degrees Celsius. In a compelling investigation, National Geographic leads a degree-by-degree journey to explore what each rising - and critical - degree could mean for the future of our people and planet. Through powerful filmmaking and intimate profiles, this special illustrates how global warming has already affected the reefs of Australia, the ice fields of Greenland, and the Amazonian rain forest. With a sobering look at the effects of our world's insatiable appetite for energy, Six Degrees Could Change the World explains what's real, what's still controversial, and how existing technologies and remedies could help dial back the global thermometer.

With streaks of oil creating havoc in Gulf waters, National Geographic is on the front lines with the individuals tasked with fighting the growing disaster.

Miami, New Orleans and NYC completely under water - it's a very real possibility if sea levels continue to rise. In Earth Under Water watch these events unfold as leading experts forecast how mankind will be impacted if global warming continues. They'll break down the science behind these predictions and explore ways humanity could adapt, including engineering vast dams near San Francisco, or building floating cities outside of New York.

The elephant faces market forces driving the value of its tusks to levels once reserved for gold. As National Geographic goes undercover to expose the criminal network behind ivory's supply and demand, scientists reveal how the elephant, with its highly evolved society, keen intelligence, ability to communicate across vast distances and to love, remember and even to mourn, is far more complex than ever imagined.