In another ominous sign of human-caused climate change, U.S. government scientists said lately that global carbon dioxide concentrations have reached a new monthly record of 400 parts per million.

Carbon dioxide is a potent greenhouse gas, and is a harmful by-product of burning fossil fuels such as oil and coal.

Despite growing concerns over climate change and energy security, the scale of subsidies given to fossil fuels is increasing globally.

Global fossil fuel subsidies amounted to USD 523 billion in 2011, increasing by 20% from 2010 (International Energy Agency, 2013). When compared to subsidies given to the renewable energy sector, these amounted to USD 88 billion in 2011 (IEA, 2013).

In 2013, the composition A Song of Our Warming Planet transformed 133 years of global temperature measurements into a haunting melody for the cello. Following its release, A Song of Our Warming Planet was featured by The New York Times, Slate, the Weather Channel, National Public Radio, io9, The Huffington Post and many others on its way to becoming a viral sensation and reaching audiences around the globe.

Now the co-creators, University of Minnesota undergraduate Daniel Crawford and geography professor Scott St. George, are back with a new composition that uses music to highlight the places where climate is changing most rapidly.

Chemistry books say there are three fossil fuels: coal, oil and natural gas.

Lately you could get the impression that coal is the only one.

Morocco's environment minister on Tuesday announced that the North African nation will reduce its emissions of greenhouse gases by 2030 by at least 13 percent.

The announcement comes ahead of the 21st session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC) in Paris in December.

Thomas Malone does not believe there is a solution to the problem of climate change. He thinks there are lots of solutions — and he has set out to find them.

Malone is founder and head of the Massachusetts Institute of Technology’s Climate CoLab, an online community that is attempting to use crowdsourcing to tackle one of the thorniest and most complex problems facing the planet.

In its first six months of existence, the world’s first solar road is performing even better than developers thought.

The road, which opened in the Netherlands in November of last year, has produced more than 3,000 kilowatt-hours of energy — enough to power a single household for one year, according to Al-Jazeera America.

Last month, Starbucks came under fire for its bottled water business. An investigation by Mother Jones magazine found that Ethos — the Starbucks-owned water brand created “to help fix the global water crisis” — was sucking groundwater out of a California county in exceptional drought, and making a lot of money doing it.

Now, ostensibly in response to that criticism, Starbucks has announced that it will stop doing that. In a Friday statement, the company said it would move the sourcing and manufacturing of Ethos water out of California and into Pennsylvania. Moving the entire West Coast operation cross-country would take about six months, it said.

Rangers in the San Bernardino National Forest call them “red trees.”

Instead of the typical deep green color, large swaths of pine trees now don hues of death, their dehydrated needles turning brown and burnt-red because of the state’s worsening drought.

It’s been a world superpower for most of the past century, but Russia still faces enormous sustainable development challenges – challenges that are compounded by economic sanctions that are sending its economy into recession territory.

The country’s infrastructure, building and manufacturing stock all suffer from extreme energy inefficiency: a recent World Bank study found that efficiency improvements in Russia could cut its energy consumption by 45%, an amount equal to France’s total annual energy consumption.