From the video: Earth Focus - Exposed: The Ugly Side of Food Production

From the video: Democracy Now! April 4, 2012

Hundreds of famous landmarks around the world from the Eiffel Tower to the Great Wall of China are plunged into darkness to mark the annual Earth Hour, part of a global effort to highlight climate change.

As other countries reduce or even eliminate their nuclear power programs, South Africa is expanding its own by building six new nuclear reactors. But at what cost? Not even the experts can agree on the economics of South Africa's nuclear ambitions...

Recent investigation found one damaged reactor at Japan's crippled Fukushima Dai-ichi nuclear power plant has extremely high levels of radiation and very little water to help cool it down. Authorities haven't been able to probe two others that had...

In the spectrum of alternative fuel sources, biofuel made from algae is perhaps the most easily mocked. So when President Obama stood before the University of Miami recently and said he thought algae could provide up to 17 percent of our transport...

A week-long blaze on the slopes of Mount Kenya is destroying thousands of hectares of forest crucial for water catchment and is threatening wildlife. Al Jazeera's Naznine Moshiri reports.

From the video: Earth Focus - Women and the Changing Environment

Haze is normal in Thailand at this time of year, but it's not usually this bad. Much of the country's north is blanketed in a thick layer of smog and people are being warned to stay indoors.

Domestic coal fires in so-called "informal dwellings" are one of the major contributors to high rates of air pollution and respiratory disease in and around the city of Johannesburg. But this situation may change, thanks to a new fire-building me...