This episode of The Green Interview features Gwynne Dyer, an internationally renowned independent journalist and expert on war and the causes of international conflict. His weekly newspaper column is published in 175 newspapers in 45 countries. Dyer is the author of eight books. In his most recent book, Climate Wars, Dyer delves into the impact of climate change on agricultural productivity and food supplies and how this will affect world peace and...

Fresh water defines the distribution of life on land. Follow the descent of rivers from their mountain sources to the sea. Watch spectacular waterfalls, fly inside the Grand Canyon and explore the wildlife in the world's deepest lake. Planet Earth captures unique and dramatic moments of animal behavior: a showdown between smooth-coated otters and mugger crocodiles, deep-diving long tailed macaques, massive flocks of snow geese on the wing and piranha...

Topics covered in this video include: Diversity of Organisms, Population Ecology, Communities and Ecosystems, and Global Issues.

By their sheer size and original shapes, baobabs are among the most remarkable trees on the planet. Relatively unknown in Madagascar, the giants are currently threatened by deforestation. To study them in the heart of their forests, the French biologist Cyrille Cornu travels by pirogue with his colleague Wilfried Ramahafaly, exploring 250 miles of wild and isolated coastline in the southwest of Madagascar.

Written on Water focuses on the Ogallala Aquifer and examines the conflicts, politics, economics and groundwater depletion in the High Plains region. Farmers and communities survive on the precious waters of the aquifer, yet it is being depleted at alarming rates. Since the 1960s, advances in irrigation technology have allowed farmers to transform the "Great American Desert" into their own fertile agricultural oasis. The Ogallala supports over one-fifth...

New Zealand was one of the last land masses to be found and settled by people. Lush and fertile, almost everything brought here flourishes, often with surprising consequences. Told through the experiences of its native species—in particular, a charismatic and peculiar giant, flightless parrot— this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.

The poorest country in the Western Hemisphere, Haiti is still struggling to get on its feet from the disastrous 2010 earthquake. But the real problem Haiti faces in the near future is the complete degradation of its natural resources. Today, forests cover less than two percent of its territory and scientists predict a mass extinction of Haiti’s biodiversity. Over a three-year period, a team of scientists and naturalists travel to the most remote...

The polar regions are being affected by global warming much more intensely than any other part of the world. The global mean temperature has risen around 1.1 degree Celsius since 1990, but in the Arctic it has risen more than twice that number. Global warming threatens to change that whole fragile ecosystem even faster than in the rest of the world. The situation is becoming more and more dramatic each year and we are approaching a point of no return....

On this edition of Nightline Matt Guttman will examine environmental issues including unusual phenomena caused by global warming.

Many marine mammals are harmed or critically injured by our trash in the oceans. Jalena found one place that's on a mission to save these creatures. The Marine Mammal Center in Northern California rescues seals, sea lions, porpoises, and other injured or sick mammals. Thanks to the dedication of hundreds of volunteers, they are healed, cured, rehabilitated, and returned to their native habitat. Some of the volunteers are concerned teens. Ever wonder...