We can all observe Earth Day this year by educating ourselves about the challenges that face our environment and what we can do about it. Try some of the titles suggested below to get started:

The age of stupid [videodisc] — Pete Postlethwaite stars as an archivist living alone in the devastated future world of 2055, who spends his days looking at old footage from the years leading up to 2015 - when a cataclysmic climate change took place.

Bag it [videodisc] by produced and directed by Suzan Beraza — The story of an average American guy who makes a pledge to stop using plastic bags.

Earth days [videodisc] by [presented by] American experience; WGBH Boston — The origins of the modern environmental movement through the eyes of nine Americans who propelled the movement from its beginnings in the 1950s to its moment of triumph in 1970 with the first Earth Day.

The end of the line [videodisc] by a film by Rupert Murray — Imagine an ocean without fish. This is the future, according to scientists - in less than 40 years - if we don't take action.

Gasland [videodisc] by HBO Documentary Films — An exploration of the controversial process of hydraulic fracking.

Ingredients [videodisc] by written and directed by Robert Bates — The history of the local food movement.

The last mountain [videodisc] by produced by Clara Bingham, Eric Grunebaum, Bill Haney; written by Bill Haney, Peter Rhodes; directed by Bill Haney — The story of the efforts of a small Appalachian town to keep a coal mining company away from their last pristine mountain.

Nuclear aftershocks [videodisc] by a Frontline production; written by Miles O'Brien & Jon Palfreman; produced and directed by Jon Palfreman — Frontline examines the implications of the Fukushima nuclear accident for the U.S., and how the disaster will affect the future of nuclear energy around the world.

Power surge [videodisc]: [are we finally on the brink of a clean energy revolution?] — Can emerging technology defeat global warming? Travel the globe to learn aboutl the surprising technologies that just might turn back the clock on climate change.

Queen of the sun [videodisc]: what are the bees telling us? by Collective Eye presents; produced by Jon Betz; directed and produced by Taggart Siegel — An examinationn of Colony Collapse Disorder and the implications of the worldwide disappearance of honeybees.

Revenge of the electric car [videodisc] by WestMidWest Productions; produced by Jessie Deeter, P.G. Morgan; written by P.G. Morgan, Chris Paine; directed by Chris Paine — This fascinating film goes behind the doors of Nissan, GM, and Tesla Motors to tell the story of the global resurgence of electric cars.

Solartaxi [videodisc]: Around the world with the sun by a film by Erik Schmitt; produced by Daniel Thomaser — The story of an epic, 18-month adventure around the globe in a homemade car powered exclusively by the sun.

The spill [videodisc] — A Frontline examination of the history of BP before and after the Deepwater Horizon explosion in the Gulf.