An impoverished former mining community in Colorado hopes that a proposed uranium mill will bring jobs and prosperity until environmentalists step in to try to stop it. Who gets to decide? Filmmaker Suzan Beraza documents the debate in her new film Uranium Drive In.

Communities and innovators all over the world are creating new sustainable food sources that are resilient to climate change and growing populations. In Madagascar, we see how villagers are closing off marine areas to allow the fish supply to replenish at a natural pace. In San Diego, California, aquaculturists are exploring open ocean farming as a more sustainable model for the fishing industry.

The popular demand for avocados, once considered an “exotic” item, is having a devastating impact on a drought-stricken community in Chile. Lying within one of the largest avocado producing regions in the country, Petorca avocado plantations are in a battle over water rights, where claims of illegal water diversion are creating civil unrest.

Los Angeles is one of the biggest biodiversity hotspots in the world, despite its smog, urban sprawl and snarling freeways. At least 20,000 native and non-native plant and animal species are thriving despite human interference, and in some cases because of it. How can people help make urban habitats more welcoming to non-human urban dwellers?

(Earth Focus: Episode 50) This episode of Earth Focus looks at the dark side of shrimp and smart phone industries. Reports from Thailand, Bangladesh, and Indonesia uncover the brutal exploitation of people and the environment for profit.

Photo:  M. Yousuf Tushar / Flickr / Creative Commons

Wood is found in countless products consumers use every day. In fact, lumber is closely connected to the world’s economy – a country’ s importation of lumber tends to rise in correlation with its gross domestic product. Following groups like “Guardians of the Forest,” we explore illegal lumber poaching in the forests of Brazil and Oregon, where citizens and scientists are working together to combat the illegal lumber trade.

The global demand for oil and gas has long-lasting impacts on the communities that supply it. In Alaska’s Arctic National Wildlife Refuge, powerful native communities are at odds over an oil exploration and drilling plan that will boost their economy but have long-term consequences on native species and their environment. In California’s Kern County, the mayors of two neighboring towns face off on the economic benefits and health risks of oil production and their vastly different visions for the most sustainable path to the future.

The debate over climate change remains polarized. Efforts to discredit the science of climate change by fossil fuel interests are a large part of the reason why says Michael Mann, Distinguished Professor of Meteorology at Penn State University. "If there was a huge industry that would stand to profit greatly if the theory of gravity were wrong you would see the theory of gravity being contested in our US Senate," he tells "Earth Focus" correspondent Miles Benson in an exclusive interview. Mann on the politics of climate change and the impact it has had on both science and policy.

The realities of milk production are forcing dairy communities across the globe to rethink the dairy production process. In this episode, we travel to a village in Kenya where the commercialization of camel milk is proving a sustainable solution in the face of drought. In Northern California, the heart of the U.S. dairy industry is finding innovative alternatives to limit the use of water and manure emissions.

(Earth Focus: Episode 46) Between 70-210 million gallons of waste oil are illegally dumped at sea by commercial ships each year. In fish, marine oil pollution is linked to cancers, tumors, reduced growth rates, genetic side effects, and death. It is also toxic to seabirds and marine mammals including whales, sea otters, and dolphins. The new film "Oil in Our Waters" exposes this practice. Film director Micah Fink shares his findings with "Earth Focus" and explains new ways citizens can now help stop illegal oil dumping.

Solar power is changing lives in unexpected places. At the Barefoot College in Zanzibar, Muslim women who have traditionally been marginalized in the workforce are learning solar installation and bringing it back to their villages, which are primarily powered by candles and paraffin lamps. In East Los Angeles, formerly incarcerated individuals are finding green job opportunities as they transition underserved communities into solar power.

The ocean is a sponge for all the greenhouse gas emissions we produce, and entire aquatic ecosystems are beginning to collapse. Off the coast of California, the disappearing abalone population is raising flags about ocean health and the lasting impact of rising sea temperatures, acidification and pollution. Various teams of scientists, volunteers and businesspeople are collaborating to protect underwater species threatened by the invasion of sea urchins.

Every twenty minutes an elephant is killed to feed an insatiable demand for ivory. African elephants may be gone in as little as ten years. Behind the slaughter are the most dangerous groups in the world – organized crime syndicates, insurgents and terrorists. Ivory buys guns and ammunition for Uganda's Lord’s Resistance Army and Sudan's Janjaweed, both linked to mass atrocities and supports al Shabaab, the al Qaeda affiliate behind the attacks on Kenya’s Westgate Mall and Garissa University.