As the holidays wind to a close and we ring in the new year, sit back and relax with your favorite libation and enjoy our most popular videos of the year. We guarantee you will learn something new.

In May of 2014, Speaker of the House John Boehner responded to a climate change question with, “listen, I’m not qualified to debate the science over climate change. I am astute to understand that every proposal that has come out of this administration to deal with climate change involves hurting our economy and killing American jobs. That can’t be the prescription for dealing with changes to our climate.” Speaker Boehner is not the only one reluctant to enter into the debate on climate change. In a March interview Mitch McConnell responded to a climate change remark with, “For everybody who thinks it's warming, I can find somebody who thinks it isn't…”

In June, the U.S. Environmental Protection Agency (EPA) proposed a rule to restrict the amount of carbon dioxide released from power plants. The rule calls for reducing carbon 30 percent by 2030 over 2005 levels. Many have praised the aggressive proposal, while others are less favorable.

California Governor Jerry Brown proposed spending $59 billion to fix crumbling roads and raising the state’s renewable energy mandate to 50 percent.

A 2013 report from the Bureau of Labor Statistics (BLS) found 3.4 million green jobs in the United States at the end of 2011. This is the latest data available from BLS, due to the elimination of its Green Careers program. On March 1, 2013, the across-the board spending cuts referred to as sequestration, required by the amended Balanced Budget and Emergency Deficit Control Act, came into effect. As part of those budget cuts, BLS stopped offering all “measuring green jobs” products.

GDF Suez SA plans to double renewable power production capacity in Europe over the next decade as the utility shifts its focus away from developing more historic natural gas and nuclear energy sources in the region.

Spending on renewable energy, which surged 16 percent in 2014, will remain strong this year, largely unaffected by the slumping oil prices that have artificially depressed their shares.

The lush hills of Strangford Lough are truly a place of magic scenery. Portaferry, a small fishing village, is located one hour’s drive from Belfast in Northern Ireland, and is today perhaps most famous for being close to the location where blockbuster Games of Thrones is filmed. In this idyllic fishing village, struggling with a high unemployment rate and a diminishing population, something new and prosperous is growing. Looking out over the calm waters of Strangford Lough, one could hardly believe that under the ocean surface — that electricity can be produced.

President Obama has been under intense scrutiny for what he would do about climate change ever since he was elected in 2008. Part of that scrutiny takes place during his State of the Union Speech, when renewable energy proponents search for key words about solar and wind energy and count how often he mentions "climate change."

Clean energy investments in India increased to $7.9 billion last year and are expected to surpass $10 billion in 2015.

The UN climate conference in Lima set the stage for Paris in 2015. Next year’s accord is to provide a working, albeit not a final, answer to the question: Is it possible to keep global warming at or below the 2 degree Celsius limit? This limit is considered the boundary beyond which the negative climatic, economic and social consequences of climate change are thought to become intolerably severe and potentially irreversible.

The Brazilian bank Itau Unibanco Holding SA raised 1.05 billion reais ($408 million) to finance renewable energy and water treatment projects.

A tool only has value if it’s used. For example, you could be the sort of person who’s set a goal of wanting to exercise more. If someone gives you a nifty little Fitbit to help you do that, and you never open the box, how useful, then, is this little device? The same is true about smart energy management solutions: good tools exist, but whether it’s calories or energy use that you want to cut, at some point those helpful devices need to be unpacked.

Oil prices have fallen by more than half since July. Just five years ago, such a plunge in fossil fuels would have put the renewable-energy industry on bankruptcy watch. Today: Meh.

Researchers at Chalmers University of Technology have discovered that the insulation plastic used in high-voltage cables can withstand a 26 per cent higher voltage if nanometer-sized carbon balls are added. This could result in enormous efficiency gains in the power grids of the future, which are needed to achieve a sustainable energy system.

Germany’s utilities, battered by the country’s shift to wind turbines and solar panels, would be glad to sell you a power plant on the cheap. They’ll even pack it up and ship it to another country.

The Obama administration is proposing a $4 billion fund to reward states that exceed cuts in greenhouse-gas emissions, and wants Congress to back steeper royalty rates for oil, gas and coal extraction from public land.

California’s bet on green energy is paying off, with clean technology companies creating more jobs and investing more money than competitors in any other state.

Ending a year-long race that had been nip-and tuck every month, renewable energy sources cumulatively provided more new electric generating capacity in 2014 than did natural gas.

The recent dramatic plunge in oil and natural gas prices, to their lowest level since the global recession in 2009, has some observers worried about the effect on clean tech. Conventional wisdom has it that renewables have a tougher time competing when fossil fuels are cheap, making grid parity (in the case of natural gas-fired electricity) more elusive for solar and wind power.

Labor, business, and environmental leaders have formed a unique coalition that will urge Illinois lawmakers to pass new standards for energy efficiency and renewable energy, leading to tens of thousands of new, local jobs.

In a previous article, I had a conversation with former-CIA chief Jim Woolsey to discuss one of America’s greatest national security vulnerabilities, its power grid. The issues that Woolsey has been concerned with for over a decade has been the ease in which a terrorist group or other actor (think North Korea for example) could attack the grid and plunge the country into darkness for months, if not years. And if that seems far-fetched, just recall how a tree limb fell in Ohio in 2003 and blacked out the entire Northeast and part of Canada for several days.

Last year the U.S. Environmental Protection Agency (EPA) proposed its aggressive Clean Power Plan (CPP), which calls to reduce carbon emissions 30 percent by 2030 over 2005 levels. States are required to submit reduction plans that can include increasing renewables, efficiency, and cap and trade programs by June 2016.

For many mining companies, the rallying cry for investigating solar or wind energy options has been that the price of oil and other conventional fuels is too high — and will almost certainly rise over time. Now, though, with oil prices having taken a dramatic nosedive, this argument no longer packs quite the same punch that it once did.

India said cheaper credit along with foreign investment will help the world’s third-largest polluter fund an ambitious renewable energy program that would build green power plants faster than China.

The renewable energy industry has come a long way in relatively little time. The costs of renewable technologies continue to go down, while renewable capacities at many utilities continue to go up. Although, in many cases, renewable technology is mature and ready for utility-scale deployment, state and federal production and investment tax policies appear less evolved.

Technologies to harness wave and tidal power have been under development for over 40 years, but up until quite recently the center of technology development has been in Europe, where the resource intensity is greater than the United States’ coasts. However, in an effort to nurture the country’s sector, the U.S. Department of Energy’s Water Power Program has invested in a broad portfolio of technologies and Alison Labonte, DOE Marine and Hydrokinetic Technology Manager, revealed that it has recently increased its focus on “innovative, game changing technologies that utilize the most abundant marine resources and that have the greatest potential for achieving economic viability.”

Apple and Google have changed our lives forever, both because of their technological innovations and sheer size as global corporations. Now, they’re aiming to reshape the energy landscape.

After a rough start to the year, My Ten Clean Energy Stocks for 2015 posted a strong recovery in February.

Many businesses can now perform the traditional functions of an electric utility — provide affordable, reliable, resilient power to homes and businesses. The barriers to entry in the business have fallen. For instance, a home with rooftop solar panels, batteries, and gas-based generators may choose to be grid-independent. Even when homes decide to remain grid-tied, utilities face falling demand and revenue, and the possibility of future grid-defection. Further, competing electricity solutions can emerge quickly, and not one-home-at-a-time — microgrids can offer community, village, or campus-level solutions.

The annual outlook issue of Renewable Energy World magazine is our attempt to predict what will happen within the renewable energy industry over the course of the year. To do this, we went straight to the top of major renewable energy companies, asking CEOs and presidents to tell us where they are devoting their company resources in order to capitalize on some of the market growth that they expect to see in 2015.

In a must-read report released this week on fast-changing energy markets, the National Bank of Abu Dhabi signals a once-in-a-lifetime opening for investors in Middle Eastern renewables and energy efficiency.

Policies favoring clean energy and increased competition would normally dim prospects for existing producers. Not in Chile, where foreign investors are driving a renewable boom at a time of surging returns by local utilities.

Global emissions were unchanged last year, the first time that’s happened amid economic growth in four decades, according to the International Energy Agency.

Sweden and Norway agreed to boost their target for renewable energy production amid concerns the additional capacity will exacerbate a power glut and strain the region’s electricity grid.

Sen. Troy Fraser (R-Horseshoe Bay) has filed a bill that would eliminate Texas’ Renewable Portfolio Standard (RPS) – a policy that has catapulted Texas to world leadership in wind energy and strengthened Texas’ energy diversity. In addition to terminating the RPS at the end of the year, SB 931would make it more difficult to build renewable energy infrastructure. The argument behind the bill is that because Texas has achieved its RPS goals it’s time to move on. Sounds reasonable, right? Well…

President Barack Obama ordered the federal government to reduce greenhouse gas emissions by 40 percent from 2008 levels over the next 10 years by shifting to renewable energy sources such as solar power.

Beijing, where pollution averaged more than twice China’s national standard last year, will close the last of its four major coal-fired power plants next year.

U.K. electricity from low-carbon sources accounted for almost a quarter of the country’s generation in the fourth quarter as Drax Group Plc converted a second coal-power plant to burn wood.

This week New York Governor Andrew M. Cuomo announced the signing of an agreement between the New York Power Authority (NYPA) and State University of New York Polytechnic Institute (SUNY Polytechnic) that aims “to create a world-class facility devoted to energy technology innovation and the rapid deployment of smart-grid technology to modernize New York's electric grid.”

What do the following have in common: New Zealand, South Korea, Switzerland, Kazakhstan, Quebec, Alberta, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island, Vermont, California, Beijing, Guangdong, Hubei, Shanghai, Shenzhen, Chongqing, Tianjin, Tokyo, Kyoto, Saitama and 28 countries in Europe?

Investors have spent more than $2 trillion on clean-energy plants in the past decade and last year added more renewable capacity than ever before.

Jim Keffer is Republican state lawmaker in Texas with a permit to carry a concealed weapon and doubts about whether human activity is causing global warming.

Researchers at Yale have unveiled a new interactive map that estimates public opinion on global warming right down to the county level.

In our second annual survey on American homeowners’ attitudes toward clean energy, one thing is resoundingly clear. In a nation divided on climate change, immigration policy, and so many other issues, Americans are overwhelmingly united in their support of renewable energy.

We've made great progress with renewable energy — but from an almost zero base we still have a long way to go. Fortunately, the path is clear. California is already over 12 percent with a combination of hydroelectric, wind and solar (unfortunately not much hydro this year). Getting to 50 percent only requires the deployment of existing technology. But can we get to 100 percent?

Political deadlock over Australia’s clean energy future is prompting companies such as Vestas Wind Systems A/S and Acciona SA to increasingly turn to rival markets for growth.

A report released recently by the International Energy Agency's Ocean Energy Systems shows that the marine and hydrokinetic sector moved closer to commercial viability through 2014.

A "dark horse" is defined as a little-known entity that emerges to prominence in the face of competition — a contestant that seems unlikely to succeed. I borrow the term from a conversation last week, wherein India was referred to as the dark horse in the global race to go solar.

The race for renewable energy has passed a turning point. The world is now adding more capacity for renewable power each year than coal, natural gas, and oil combined. And there's no going back.