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TWO brands of olive oil, one from Australia, the other shipped 16,000 kilometres from Italy, sit on a supermarket shelf. Most eco-friendly shoppers would reach for the Australian oil. But despite burning less fossil fuel to get here, it may not be better for the planet. Contrary to popular belief, ''food miles'', or the distance food has travelled before we buy it, is a poor indicator of our food's total greenhouse gas emissions, or ''carbon footprint''. Advertisement: Story continues below More important is the way our food is farmed and produced, and how far we drive to buy it. CSIRO studies are expected to show how emissions from farming and food production eclipse those from food freight.

One of the world's most complex experiments on the impact of rising levels of carbon dioxide is taking shape in eastern Australia, where giant steel frames nine stories high have been built on native woodland.  The project near Sydney will mimic future climatic conditions by simulating higher atmospheric concentrations of carbon dioxide. Carbon dioxide is pumped into an environmental "time machine" on the outskirts of Sydney, aiming to predict how vegetation will react to future climate change.

This story investigates claims of how Citipower and SP Ausnet used the electricity rules and bureaucracy to turn what should have been a $107 million public investment on an enhancement to the Melbourne CBD electricity network into a $271 million spend.

"The integration of wind energy generation into the electricity grid in South Australia is a success story. The gross statistic often quoted is the total electricity produced as a percentage of the supply. In the year to June 2012, the electricity generated by wind farms in SA amounted to 3,349 GWh, or 26% of the total supply. This was behind the 50% supplied by natural gas and ahead of coal's 24%."

"The greening of American energy is both real and profound. But there's a flip side to this American success story. Even as our nation is pivoting toward a more sustainable energy future, America's oil and coal corporations are racing to position the country as the planet's dirty-energy dealer - supplying the developing world with cut-rate, high-polluting, climate-damaging fuels. Much like tobacco companies did in the 1990s - when new taxes, regulations and rising consumer awareness undercut domestic demand - Big Carbon is turning to lucrative new markets in booming Asian economies where regulations are looser. Worse, the White House has quietly championed this dirty-energy trade."

The Contest is the project of the Real Food Media Project, a collaborative initiative using online movies and a web-based action center along with grassroots events around the country to spread the stories of sustainable food and farming. The Project is a program of Corporate Accountability International.

"Published on Jul 9, 2013 Building a skyscraper? Forget about steel and concrete, says architect Michael Green, and build it out of ... wood. As he details in this intriguing talk, it's not only possible to build safe wooden structures up to 30 stories tall (and, he hopes, higher), it's necessary."

"In the American West, wildfires are essential for keeping forests healthy. But the same fires that help release nutrients and promote new plant growth can also wipe out thousands of acres of forest and cause millions of dollars in damage. Since the 1970s, wildfires have been on the rise and some of this is due to a warming planet. But increased wildfires because of hot climate is not the whole story. Here we look at the way climate can affect vegetation in the West, and what influence this has on wildfires. Drought and rainfall can have very different wildfire outcomes depending on where you look in the West."

"The latest edition of this authoritative annual report tells the story of the latest developments, signs and signals in the financing of renewable power and fuels. Packed full of statistics, charts and illuminating narrative, it explores the issues affecting each type of investment, technology, region."

"Published on 6 Apr 2014 Hollywood celebrities and respected journalists span the globe to explore the issues of climate change and cover intimate stories of human triumph and tragedy. Watch new episodes Sundays at 10PM ET/PT, only on SHOWTIME. Subscribe to the Years of Living Dangerously channel for more: http://s.sho.com/YearsYouTube"

"Batteries are so ubiquitous today that they're almost invisible to us. Yet they are a remarkable invention with a long and storied history, and an equally exciting future. A battery is essentially a device that stores chemical energy that is converted into electricity. Basically, batteries are small chemical reactors, with the reaction producing energetic electrons, ready to flow through the external device. Batteries have been with us for a long time. In 1938 the Director of the Baghdad Museum found what is now referred to as the "Baghdad Battery" in the basement of the museum. Analysis dated it at around 250BC and of Mesopotamian origin."

"Published on 6 May 2015 This 2-minute "explainer" shows how tiny plastic microbeads are designed to go down the drain and into our rivers, lakes, and oceans and we can do to stop this ridiculous assault on our public waters. TAKE ACTION: http://bit.ly/banthebead"

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"shmeco.com invites people to exchange their ideas, stories and experience on sustainable living choices"

"Windfall: The Booming Business of Global Warming by journalist McKenzie Funk tells the story of the people and corporations trying to profit from climate change. Many of them don't want to halt its progress, they want to bring it on."

"When we talk about greenhouse gases we usually talk about carbon dioxide. When media reports depict climate change, we invariably see the cooling towers of a coal power station. Which is fair, because carbon dioxide, or CO2, is the big one: nearly 75% of Australia's total greenhouse gas emissions are carbon dioxide. Most of those come from the energy sector and the combustion of fossil fuels. But there are other gases involved in the greenhouse story. Methane and nitrous oxide are also contributors to Australia's greenhouse gas account. And both have a much greater impact on the atmosphere in terms of global warming than carbon dioxide."

IT'S a problem that besets every urban area: dodging dog droppings on the footpath. Now one town has come up with a clever way to keep doggie doo off its streets - and remind owners of their responsibilities. It sends the offending deposits back to the owners marked "Lost Property".

"It is important to distinguish between genuine local concerns and the increasingly professional anti-wind activists whose strategy seems designed to confuse and inflame the debate on wind energy. In Australia, some anti-wind groups promote bogus science, claiming a litany of medical ailments attributable to turbines. "

"Gadgets get discarded at ever faster rates and account for millions of tons of consumer electronic waste every year. To feed production, more and more resources are claimed and we are beginning to suffer from the immense burden on the natural and social environment. What is the purpose of driving the technological advancement? Does it help us create something that will last? Where are we going so fast? We don't know. Or do we?"