Like ethanol, butanol can be produced from corn or sugar cane, but it has a far higher energy density and is easier for refiners to mix with gasoline.
Tesla Motors has completed the coast-to-coast section of its free Supercharger network for its Model S electric car. Tesla Motors expects the entire Supercharger network to be complete by the time the affordable Model E is released to the market in 2017.
Even with Kazakhstan's giant Kashagan oil field down, the prospects look up for oil and gas in the Central Asian country, Graeber writes.
Ukraine will host a summit in May to explore European shale oil and natural gas. Despite an uncertain political future, Ukraine is still one of more promising shale areas in the region, Graeber writes.
More crude oil was spilled in US rail incidents last year than during the previous 37 years, according to a new government analysis. Oil by rail transport has become more popular as pipeline capacity has fallen behind increases in oil production during the North American shale boom.
President Obama can push clean energy forward without the need for congressional action, Cunningham writes. A new report lists over 200 recommendations for executive action on clean energy and energy efficiency.
The shale revolution in the United States, as with any revolution, will be brief, Graeber writes. It's what happens after the revolution ends that matters.
California sits atop the largest tight oil formation in the US, Cunningham writes, but the state's water crisis threatens to hamper oil and gas production and put an end to a Bakken-like bonanza.
While western Iraq is in the hands of Al Qaeda, recent trends suggest there's no safe oil investment refuge even in the Kurdish north, Graeber writes.
A potential $1.5 billion oil-for-goods swap between Iran and Russia has prompted harsh responses from Washington, which says such a deal could trigger new US sanctions.
Complaints in key venues of the US oil and gas boom continue to suggest that drinking water is being contaminated by fracking for oil and gas, Peixe writes. The pollution complaints against fracking have been confirmed in a number of cases, but not across the board.
Cheap natural gas and environmental regulations have threatened King Coal's US reign in recent years, but could 2014 be the year coal stages a comeback?
Gas prices averaged $3.49 per gallon in 2013, down about 12 cents from the record-high price in 2012. What's the outlook for gas prices in 2014?
The polar vortex that has swept much of the US in the past days is creating a headache for utilities struggling to keep up with increased demand and spiking prices. The impact of the polar vortex is particularly harsh on New England, where natural gas pipeline infrastructure is lacking.
South Sudan is rich in oil, but infrastructure challenges and rising violence could undermine economic hopes for a troubled region, Graeber writes. The country gained independence in 2011, but border issues, ethnic fighting and disputes over oil have led to violence in South Sudan.
As natural gas production soars at the Marcellus Shale, Pennsylvania may be the second-biggest gas-producing US state by the end of the year, according to the US Energy Information Administration.
Tesla Motors has plans to release a Model E – 'E' for everyone – sometime in 2015. With a price estimated to be around $35,000, the Tesla Motors Model E would in theory offer the average American a long-range electric car for half the price of the current Model S.
The US Department of Energy has awarded up to $226 million to support the development of small modular nuclear reactors. Small nuclear reactors can be constructed in factories and shipped to site, cutting costs and avoiding construction delays, but their benefits remain unproven.
Mexican legislators have passed a reform ending the 75-year state grip on the energy sector in overwhelming fashion. The move is aimed at reversing the decline of Mexico's oil output and attracting outside investment into its considerable natural resources.
The budget deal working its way through Congress includes provisions that will open up vast new territories in the western Gulf of Mexico for oil and gas drilling. The budget deal allows for the development of oil and gas reserves that cross national boundaries, and sets up a framework for their joint development.