"The highly anticipated iPhone 5 is finally in millions of people's hands.  Within three days of its September 21st launch, Apple had sold a record-breaking five million units. And within a year, analysts project that sales of the iPhone 5 will reach 170 million. The popularity of the new device got us thinking: how much juice does it take each year to charge a next-generation smartphone? And how does the energy consumption of smartphones compare to that of other consumer electronics? To find out, we got our hands on a new iPhone 5 and also a Samsung Galaxy S III - currently the hottest Android handset - then headed into the Opower Lab for some testing. Here's what we found, and our assessment of what it suggests about the energy impact of our increasingly on-the-go digital lifestyles…"

Each week NASA's State of Flux website features images of different locations, showing the effects of climate change, urbanization, or natural hazards such as fires and floods. If you select the 'map view' option you can view a Google Map of all the locations so far covered. If you then select a marker on the map you can view two images of the location that have been taken at different times. If you scroll to the bottom of the page you can also find a number of links to browse the images by different categories, such as 'extreme events', 'human impacts' and 'top picks'.

"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%."

"Traditionally known for their low cost furniture and sustainable ethos, Swedish furniture giant IKEA has introduced thin-film solar panels to their UK stores in partnership with Hanergy Holding Group Limited."

"By the end of this decade, it estimates that onshore wind will be the cheapest source of energy we have. At an average cost of $90 per megawatt-hour (MWh) and in some cases as cheap as $60/MWh it will be cheaper than coal and cheaper than gas. By 2030, the cheapest option will be solar PV, which could cost as little as $50/MWh, followed closely by wind and landfill gas."

"..... an Australian Bureau of Statistics survey of Victorian households' energy and water use skewers the myth that solar panels are mostly going up on the roofs of the well-off. The survey found income had little effect on solar take-up."

"The founders of the Education Arcade at MIT stated that there are many intrinsic motivations for learning associated with games. The threat of failure is lowered. Games allow players to try, make mistakes or fail, and then try again without losing face. Discovery and application of learned skills in new contexts encourages exploration and experimentation. A sense of engagement continues during gaming. Computer games allow players to be stakeholders in the events that occur on the screen. Increasingly, there are a number of games being developed that help people learn about the issues involved in sustainable developement. Besides which ... they are fun!"

When I testified before the US Senate in the hot summer of 1988, I warned of the kind of future that climate change would bring to us and our planet. I painted a grim picture of the consequences of steadily increasing temperatures, driven by mankind's use of fossil fuels. But I have a confession to make: I was too optimistic. My projections about increasing global temperature have been proved true. But I failed to fully explore how quickly that average rise would drive an increase in extreme weather.

"The City of Sydney is embarking on the construction of Australia's largest rooftop solar installation, following an announcement of a plan to install a 1,250KWp (kilowatt peak) solar photovoltaic system across 30 rooftop sites within the Sydney city boundary."

"Professor Robert Manne, a political philosopher at La Trobe University, is making this declaration in a 7,000-word essay published on Friday in The Monthly magazine - its cover screaming "Victory of the Denialists: How Climate Science Was Vanquished". Manne's essay charts the decades-long effort to spread doubt and confusion about the science of human-caused climate change, focusing on the think tanks and corporations that created and backed a "relentless" campaign in the United States which has infected other parts of the Western world, including Australia."

A fun interactive looking at using common animals to mow your lawn

I'm a freelance journalist in Melbourne, Australia. I write about environmental, social and community issues. I am often inspired by the people I write about, so I hope you will be too. You can find most of my published articles on this website. I write a weekly column called Greener Homes in the Domain lift-out of the Sunday Age.  

The Monash Sustainability Institute (MSI) is a multi-disciplinary, cross-faculty institute that delivers solutions to key climate change and sustainability challenges through research, education and action.

Despite a severe economic downturn, Ireland has held to its ambitious energy targets to move itself towards a low-carbon economy. But to reach its goals and break its heavy use of imported fossil fuels, Ireland must invest even more in renewable technologies, expand grid integration and improve energy efficiency, the International Energy Agency (IEA) said today in a review of Irish energy policies.

Finding creative solutions to energy issues has become a major priority for Google co-founder and CEO Larry Page in recent years. For the obvious reasons -- a growing population, increasingly scarce resources, and climate change -- he believes that the corporate world needs to operate more sustainably, and he is determined to build the nation's first zero-carbon company. This means a business that ultimately is so energy efficient and uses so much clean power that it emits no greenhouse gas -- a very tall order indeed. Experts aren't sure whether it's even possible for a company to emit no carbon, but Google is trying to come as close to that goal as possible. "As we became a bigger user of energy, we wanted to make sure we were not just part of the problem, but part of the solution," says Urs Hölzle, Google's employee No. 8 and a senior vice president who oversees the company's green initiatives.

Climate change has altered the behaviour and interactions of many plants and animals, including when fish migrate and plants flower. But evidence has been lacking that such shifts have a genetic basis. Organisms often deal with environmental pressures by altering traits through a process known as phenotypic plasticity, which does not require genetic changes. But many organisms will need to evolve genetic adaptations to climate change to survive, and seasonal traits such as the timing of migration are those most likely to evolve as they are genetically heritable.

America's first new nuclear plants in more than a decade are costing billions more to build and sometimes taking longer to deliver than planned, problems that could chill the industry's hopes for a jumpstart to the nation's new nuclear age.

The World Wind Energy Conference is winding up in Bonn, Germany with the special focus this year being 'Community Power - Citizens Power', recognising the power of the community energy model. We are delighted and humbled to have been awarded the prestigious World Wind Energy Award 2012.

Solar subsidies cost German consumers billions of dollars a year and are widely regarded as inefficient. Even environmentalists are concerned that Berlin's focus on solar comes at the detriment of other renewables. But the solar industry has a powerful lobby, and politicians have proven powerless to resist.

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.