China is the world's most populous country with over 1.3 billion people. It has experienced tremendous economic growth over the last three decades with an annual average increase in gross domestic product of 9.8% during that period. This has led to an increasing demand for energy, spurring China to add an average of 53 gigawatts (GW) of electric capacity each year over the last ten years to its power generation capabilities.

Electricity is vital to the commerce and daily functioning of United States. The modernization of the grid to accommodate today's uses is leading to the incorporation of information processing capabilities for power system controls and operations monitoring. The "Smart Grid" is the name given to the evolving electric power network as new information technology systems and capabilities are incorporated. While these new components may add to the ability to control power flows and enhance the efficiency of grid operations, they also potentially increase the susceptibility of the grid to cyber (i.e., computer-related) attack since they are built around microprocessor devices whose basic functions are controlled by software programming. The potential for a major disruption or widespread damage to the nation's power system from a large scale cyberattack has increased focus on the cybersecurity of the Smart Grid.

For most of the twentieth century, the primary use of coal in the United States was for electric power generation, and for most of the history of power generation in the United States, coal has been the dominant fuel used to produce electricity. Even as recently as 2011, coal was the fuel used for almost 42% of power generation in the United States accounting for 93% of coal use. Industrial uses represented the remaining 7%. However, in April 2012, coal's share of the power generation market dropped to about 32% (according to Energy Information Administration statistics), equal to that of natural gas. Coal was the fuel of choice because of its availability and the relatively low cost of producing electricity in large, coal-burning power plants which took advantage of coal's low-priced, high energy content to employ economies of scale in steamelectric production. However, coal use for power generation seems to be on the decline, and the magnitude of coal's role for power generation is in question. Two major reasons are generally seen as being responsible: the expectation of a dramatic rise in natural gas supplies, and the impact of environmental regulations on an aging base of coal-fired power plants. A recent drop in natural gas prices has been enabled by increasing supplies of natural gas largely due to horizontal drilling and hydraulic fracturing (i.e., fracking) of shale gas formations. If the production can be sustained in an environmentally acceptable manner, then a long-term, relatively inexpensive supply of natural gas could result. Decreased natural gas prices are lowering wholesale electricity prices, stimulating a major switch from coal to gas-burning facilities. The electric utility industry values diversity in fuel choice options since reliance on one fuel or technology can leave electricity producers vulnerable to price and supply volatility. However, an "inverse relationship" may be developing for coal vs. natural gas as a power generation choice based on market economics alone, and policies which allow one fuel source to dominate may come at the detriment of the other. Coal-fired power plants are among the largest sources of air pollution in the United States. More than half a dozen separate Clean Air Act programs could possibly be used to control emissions, which makes compliance strategy potentially complicated for utilities and difficult for regulators. Because the cost of the most stringent available controls, for the entire industry, could range into the tens of billions of dollars, some power companies have fought hard and rather successfully to limit or delay regulations affecting them, particularly with respect to plants constructed before the Clean Air Act Amendments of 1970 were passed. The expected retirement of approximately 27 GW of coal-fired capacity by 2016 has been reported to the Energy Information Administration (EIA) by coal plant owners and operators, accounting for approximately 8.5% of U.S. coal-fired capacity. While the costs of compliance with new Environmental Protection Agency regulations are a factor, several other issues are cited by coal plant owners and operators as contributing to these retirement decisions including the age of coal-fired power plants, flat to modest electricity demand growth, the availability of previously underutilized natural gas combined-cycle power plants, and the lower price of natural gas due to shale gas development. Even coal plants which have made significant modifications to meet existing EPA regulations are being closed or mothballed due to a combination of low natural gas prices, and the inability to sell power into other markets. EIA expects coal to be a significant part of the U.S. power generation industry's future to well past 2030. But given price competition from natural gas, and emerging environmental regulations, that role will likely be smaller than in recent decades. Coal-fired generation is likely to face a challenging future.

In 2009, after a public appeal, the British Library purchased a manuscript 'Booke', which Captain Narbrough bought in 1666 and into which he subsequently entered his journals of his voyages and correspondence relating to them. The 'Booke' contains his own fair copy of the journal of his voyage through the Strait of Magellan and north to Valdivia in the Sweepstakes, 1669-1671. This is published here for the first time, together with an incomplete and somewhat different copy of the journal, held in the Bodleian Library, which was made for him by a clerk after he returned to England, and which was partially published in 1694. Both versions of the journal together with previously unpublished records made by members of his company, as well as reproductions of the charts which Narbrough relied on and those he produced, are printed here. Narbrough's mission was to carry out a passenger who referred to himself as Don Carlos Enriques and who claimed to have expert knowledge of Peru and Chile, and contacts with disaffected colonists and indigenous peoples. Don Carlos's written proposals to King Charles II and his ministers, only recently discovered, are here translated from Spanish, and give a clear sense of the character, if not the real identity, of an adventurer, who gave the authorities in England, Chile and Peru totally different and changing stories about his status and the purpose of the voyage. Narbrough's conduct of the voyage has been criticized by later authors who have focussed on his inability recover four of his ship's company from detention in Valdivia and the lack of tangible results, in the form of trade or contacts with indigenous groups. The more complete story provided here shows that Narbrough carried out his ambiguous orders to the letter. His chart of the Strait of Magellan remained the principal chart of the area for the next century. King Charles II and James, Duke of York, both recognized his abilities. He was rapidly re-employed in naval service, subsequently knighted, and rose to become a Commissioner of the Navy and Commander in Chief in the Mediterranean.