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Alaska is a U.S. state situated in the northwest extremity of the North American continent. Bordering the state to the east are the Canadian territory of Yukon and the Canadian province of British Columbia; to the north are the Chukchi and Beaufort Seas, southern parts of the Arctic Ocean. To the west and south is the Pacific Ocean, with Russia (specifically, Chukotka Autonomous Okrug and Kamchatka Krai) farther west across the Bering Strait. Alaska is the largest state in the United States by area, the 4th least populous and the least densely populated of the 50 United States. Approximately half of Alaska's residents (estimated at 736,732 by the Census Bureau in 2014) live within the Anchorage metropolitan area. Alaska's economy is dominated by the oil, natural gas, and fishing industries, resources which it has in abundance. Tourism and military bases are also a significant part of the economy. Although it had been occupied for over ten thousand years by indigenous peop...

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the one-mile-wide (1.6 km), three-mile-long (4.8 km) channel between San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, on the northern tip of the San Francisco Peninsula, to Marin County, bridging both U.S. Route 101 and California State Route 1 across the strait. The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers. The Frommers travel guide considers the Golden Gate Bridge "possibly the most beautiful, certainly the most photographed, bridge in the world". It opened in 1937 and was, until 1964, the longest suspension bridge main span in the world, at 4,200 feet (1,300 m). Until 1964, the Golden Gate Bridge had the longest suspension bridge main span in the world, at 4,200 feet (1,3...

Paris attacks: Bataclan and other assaults leave many dead France has declared a national state of emergency and tightened borders after at least 120 people were killed in a night of gun and bomb attacks in Paris. Eighty people were reported killed after gunmen burst into the Bataclan concert hall and took dozens hostage. The siege ended when security forces stormed the building. People were shot dead at bars and restaurants at five other sites in Paris. Eight attackers are reported to have been killed. Police believed all of the gunmen were dead but it was unclear if any accomplices were still on the run after the string of near-simultaneous attacks. Paris residents have been asked to stay indoors and about 1,500 military personnel are being deployed across the city. Attack sites: Bataclan concert venue, 50 boulevard Voltaire, 11th district - gun and suicide bomb attacks Stade de France, St Denis, just north of Paris - explosions near venue as France played Germany in...

The Perito Moreno Glacier (Spanish: Glaciar Perito Moreno) is a glacier located in the Los Glaciares National Park in southwest Santa Cruz Province, Argentina. It is one of the most important tourist attractions in the Argentinian Patagonia. The 250 km2 (97 sq mi) ice formation, and 30 km (19 mi) in length, is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system shared with Chile. This ice field is the world's third largest reserve of fresh water. The Perito Moreno glacier, located 78 kilometres (48 mi) from El Calafate, was named after the explorer Francisco Moreno, a pioneer who studied the region in the 19th century and played a major role in defending the territory of Argentina in the conflict surrounding the international border dispute with Chile.

Victoria Falls, or Mosi-oa-Tunya (Tokaleya Tonga: the Smoke that Thunders), is a waterfall in southern Africa on the Zambezi River at the border of Zambia and Zimbabwe. While it is neither the highest nor the widest waterfall in the world, it is classified as the largest, based on its width of 1,708 metres (5,604 ft)[7] and height of 108 metres (354 ft),[8] resulting in the world's largest sheet of falling water. Victoria Falls is roughly twice the height of North America's Niagara Falls and well over twice the width of its Horseshoe Falls.  Over at least 100,000 years, the falls have been receding upstream through the Batoka Gorges, eroding the sandstone-filled cracks to form the gorges. The river's course in the current vicinity of the falls is north to south, so it opens up the large east-west cracks across its full width, then it cuts back through a short north-south crack to the next east-west one. The river has fallen in different eras into different chasms wh...

Mount Everest, also known in Nepal as Sagarmāthā and in Tibet as Chomolungma, is Earth's highest mountain. It is located in the Mahalangur mountain range in Nepal.Its peak is 8,848 metres (29,029 ft) above sea level.It is not the furthest summit from the centre of the Earth. That honour goes to Mount Chimborazo, in the Andes.The international border between China (Tibet Autonomous Region) and Nepal runs across Everest's precise summit point. Its massif includes neighbouring peaks Lhotse, 8,516 m (27,940 ft); Nuptse, 7,855 m (25,771 ft) and Changtse, 7,580 m (24,870 ft). In 1856, the Great Trigonometrical Survey of India established the first published height of Everest, then known as Peak XV, at 8,840 m (29,002 ft). The current official height of 8,848 m (29,029 ft) as recognised by China and Nepal was established by a 1955 Indian survey and subsequently confirmed by a Chinese survey in 1975. In 1865, Everest was given its official English name by the Royal Geographical S...

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few thousand (103) stars to giants with one hundred trillion (1014) stars,each orbiting their galaxy's own center of mass. Galaxies are categorized according to their visual morphology, including elliptical,spiral, and irregular.Many galaxies are thought to have black holes at their active centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than our own Sun.As of July 2015, EGSY8p7 is the oldest and most distant galaxy with a light travel distance of 13.2 billion light-years from Earth, and observed as it existed 570 million years after the Big Bang. Previously, as of May 2015, EGS-zs8-1 was the most distant known galaxy, estimated to have a ...