The Pentagon may seem an unlikely promoter of alternative energy, but the biggest consumer of oil in the United States is looking at ways to become just that by partnering with private firms.

By Jeff Mason WASHINGTON (Reuters) - President Barack Obama is launching a ''Major Economies Forum on Energy and Climate'' to help facilitate a U.N. agreement on global warming, the White House said on Saturday. Leaders from 16 major economies have...

The problem for Mr. Obama is that marijuana reform was at or near the top of the list of all questions in three major categories: budget, health care reform, green jobs and energy. Our leader doesn't seem to understand that millions of his interlocutor-constituents are actually quite serious about the issue.

The plant, to be built in collaboration with renewable energy services company Enalg, will be operative in two years and will produce 40 megawatts of electricity, equivalent to half of the energy required by the entire city centre of Venice.

Energy drinks generally don't offer much in terms of nutrition, yet there's no denying the popularity of these caffeine-packed elixirs. One expert breaks down what exactly is in these high-energy formulas.

After weeks of supportive words from the president, U.S. green-tech professionals saw something else this week: money starting to flow.The Department of Energy said last Friday that it expects to provide $535 million in loans to California start-up Solyndra, which has a novel design for rooftop solar arrays.

Natural gas locked up in water crystals could be a source of enormous amounts of energy – and if a new technology delivers what scientists are claiming, then it could even be emissions-free too.

On Tuesday of this week, Gavin Newsom introduced a resolution that will expand the SF Energy Watch program by nearly $4 million. To date, SF Energy Watch has created 150 green collar jobs and reduced energy usage by 6 megawatts, which is about the amount it takes to power 6,000 San Francisco homes.

If you had to store three petabytes of data and keep it online for the entire Internet community, and you wanted to save space and energy, what would you do? For the Internet Archive, the answer was simple: Put the data in a Sun Modular Datacenter (Sun MD) equipped with Sun's Open Storage technology.

Planetary nebulae are the final butterfly-like state that heralds the end of a Sun-like star's energy-generating life. They form when stars up to eight times the mass of the Sun begin to die, bloating into red giants before shedding as much as half their mass as gas and dust nebulae.

Gamma rays are the 800 pound gorillas of photons. They are the highest energy form of light. Even the wimpiest gamma ray has about a 500,000 times the energy of a visible light photon, and it takes a pretty seriously scary event to make one. That’s why this new map of the sky is so seriously cool...

Researchers are reporting compelling new scientific evidence for the existence of low-energy nuclear reactions (LENR), the process once called "cold fusion" that may promise a new source of energy. One group of scientists, for instance, describes what it terms the first clear visual evidence that LENR devices can produce neutrons

If a federal energy efficiency resource standard (EERS) were adopted, one that demanded a electricity reduction of 15-percent and a natural gas reduction of 10-percent, 262 million metric tons of greenhouse gas emissions could be prevented. That is the equivalent of taking 48 million cars off the road for one year.

Save the natural resources and energy while you are working.

Some of the coolest green buildings anywhere, slashing energy and water use and providing a nice place to rest your head.

Royal Dutch Shell, a company that made a billion dollars a week in profit in 2008, now can't afford to invest in renewable energy. Shell invested a total of $1.25 billion in wind and solar between 1993 and 2006. It will invest $32 billion in oil, natural gas, and other dirty energy fuels this year alone.

Growing populations, falling energy sources and food shortages will create the "perfect storm" by 2030, the government's chief scientist Professor John Beddington has said.

Nuclear power will have to form part of a comprehensive post-carbon energy infrastructure, and its downsides are greatly overstated, according to a group of experts.

Huge news in the real-life ray gun world: Electric lasers have hit battlefield strength for the first time -- paving the way for energy weapons to go to war.

Scientists in California say they're trying to replicate the power of the sun by firing laser beams at a tiny pellet of hydrogen. Physicists at the National Ignition Facility in Livermore say the nuclear fusion experiments may offer the world a clean source of energy, The Times of London reported Sunday. The hydrogen pellet will be hit with 192...