Alexandra Villaseñor takes in the damage of a wildfire in Paradise, California. | Thomson Reuters Foundation/Nicky Milne

Urban Habitat: Cataloging Species

As urbanization creates a variety of vectors for non-native species to find their way into Los Angeles, scientists work to catalog the city's evolving biodiversity.

The Los Angeles Aqueduct made the region more attractive non-native species introduced by human activity. Species now common in the city include animals from tropical places, including anoles, geckos and the infamous coqui frog. Biologists are finding the best way to research biodiversity in urban areas and to gain access to the species living on private property throughout the city, is to enlist he help of citizen scientists.

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Avocado Wars: The Battle Over Water Rights In Chile

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.

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Shades of Gray: Living with Wolves

Gray wolves once ranged across North America. But by the 1930s, they were nearly extinct — trapped, poisoned and hunted by ranchers, farmers, and government agents. With protection under the 1973 Endangered Species Act, the wolf population rebounded. But wolves lost federal protection in 2011. Now, with hunting permitted in many Western states, the future of this once endangered species may again be in question. Can we live with wolves? "Earth Focus" travels to Montana and Wyoming to find out.

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Dying Oceans: Abalone Restoration In California

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.

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Building A Future: Lumber Poaching In Oregon and Brazil

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.

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Inside The Climate Wars: Conversation with Michael Mann

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.

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Fueling Change: Oil Extraction in Alaska and California

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.

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Dairy Alternatives: Rethinking Milk In California and Kenya

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.

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Food Heroes

"Ground Operations," a new film by Dulanie Ellis and Raymond Singer, shows how farming provides both employment and therapeutic recovery for America's combat veterans. Then, meet organic pioneers from Minnesota and Maryland. Also in this episode, a segment showing how California's Pie Ranch develops an innovative way to bring healthy food to a high tech giant while saving a small family business in the process.

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Sea Level Rising: Living With Water

Louisiana still is learning from Hurricane Katrina. Forecasts are dire for Louisiana to experience the second-highest sea level rise in the world. There is a big movement brewing in New Orleans to build adaptive "resilience zones." In Southeast Louisiana, the native peoples of the Isle de Jean Charles have become the first U.S citizens moving within their homeland displaced by climate change.

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Lighting A Path: Embracing Solar Power In California and Zanzibar

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.

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Climate Change: The Rising Cost

(Earth Focus: Episode 70) The cost of climate change is rising and its consequences are increasingly threatening our national security. Droughts, floods, wildfires, and severe weather cost lives and livelihoods when they damage property, crops, and infrastructure. Communities in Texas, Iowa, Colorado, Alaska are already struggling with the impact of climate change and coastal cities face expensive consequences within a couple of decades. The high price we are paying today is a harbinger of what the future may hold. How will the US economy and national security be affected?

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Climate Migration

Populations are dramatically shifting as climate change drives migration. Droughts and floods are driving many people away from their rural, farming communities into big cities. We see how this is manifesting in Mongolia and examine the factors leading to the new community of Haitian people living in limbo at the border between Mexico and the U.S.

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Earth Focus

When Peru’s President Martín Vizcarra came to power in 2018, one of his first priorities was to gain control over the devastating outbreak of illegal gold mining operations in the Amazonian state of Madre De Dios. In February 2019, the government launched Operation Mercury, a decisive action to shut down La Pampa, an entire town built around an illegal gold mine.

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City Planning

Two cities, San Francisco and Freetown, brace for climate change using vastly different methodologies. San Francisco's developers are building expensive real estate on floodplains as officials try to heed expert projections on future sea levels. On the other side of the world, a deadly mudslide caused by torrential rains and deforestation in Sierra Leone shows the consequences of city planning that doesn't take climate change into account.

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