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Corrections are presented for articles including an article on exchange-traded funds and the "Outlook" column on labor market conditions, both in the December 8, 2014, issue, and a "World News" article about melting in Antarctica in the December 5, 2014, issue.

The article discusses the millions of Adélie penguins that are reportedly thriving in the Antarctic region as of 2014, focusing on penguin colonies, an apparent sea ice decline in the Arctic region, and an analysis of the relationship between Adélie penguins and climate change research.

The article reports that two studies released in May 2014 warned that melting glaciers in Antarctica could lead to rising sea levels, one led by Eric Rignot of the U.S. National Aeronautics and Space Administration and one conducted by researchers at the University of Washington.

The article looks at the continent of Antarctica, as of 2012, noting that it has been only recently and minimally explored by humans, offering impressions from the author's trips there, and discussing the impact of global warming on the continent's ice and fauna.

The article reports that sea ice around Antarctica has been increasing as of 2012 due to the effect of winds, citing research using satellites from the U.S. Defense Meteorological Satellite Program and noting the shrinking of Arctic Ocean sea ice at the same time.

The article discusses the U.S. Antarctic Program, focusing on ways in which the presence of U.S. scientific research stations contributes to the ongoing peace on the continent. Reviews by the White House of various U.S.-led research projects on topics such as climate change, microbes, and origins of the universe are explored and potential environmental concerns related to constructing an airstrip and redesigning the scientific research center at McMurdo Station are discussed. Other topics include the Antarctic Treaty of 1959, the impact of the Antarctic Program on U.S. foreign policy, and the potential mining of minerals on the continent.

The article reports on snow melting in Antarctica. A satellite analysis has shown that a large area of surface snow in the Antarctic region has melted, thanks to masses of warm air. The scientists from the Jet Propulsion Laboratory of the U.S. National Aeronautics & Space Administration have detected that a warm spell pushed to within 310 miles of the South Pole for one week in 2005. The development led to the melting over an area as vast as California.

Reports that under the surface of the ice in Antarctica, profound and potentially troubling changes are taking place. Reference to melt water that is penetrating deeper and deeper into ice crevices, weakening immense and seemingly impregnable formations that have developed over thousands of years; Importance of the fact that huge glaciers are thinning and ice shelves the size of American states are either disintegrating or retreating; Possible indications of global warming; Reports of large growths of grass appearing in places that until recently were hidden under a frozen cloak.

Discusses the climatic conditions of the summers in Antarctica.

Reports the melting of the West Antarctic Ice Sheet. Reason for its melting; Remarks from Howard Conway of the University of Washington; Contribution of the annual melting to the sea-level rise; Results of global warming.

Focuses on scientists' theories behind Antarctica's thawing.

Focuses on the work of the United States National Ice Center which keeps track of the high number of Southern Hemisphere icebergs. Number of icebergs they are tracking as of October 1999; Suggested reasons on why so many large pieces of the Earth's polar ice shelves are breaking free; Facts about icebergs.

Reports that scientists are worried that increased ultraviolet (UV) light, due to ozone depletion, may be undermining the marine food chain from the bottom up. How UV-B inhibits photosynthesis; Conditions in Antarctica as of December 1998; How microscopic algae called phytoplankton sustain Antarctica's animals. INSET: A rich laboratory, a hostile environment.

Reports on the creation of the Arctic Council in Ottawa, Canada on September 18, 1996 to protect native people and wildlife suffering from the effects of industrialization in other countries. Contaminants carried by Arctic fish and whales; Environmental studies to be completed by the group; Permanent seats on the council given to members of native peoples.