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britannica .com. The Encyclopædia Britannica ( Latin for 'British Encyclopædia') is a general knowledge English-language encyclopaedia. It has been published by Encyclopædia Britannica, Inc. since 1768, although the company has changed ownership seven times. The encyclopaedia is maintained by about 100 full-time editors and more than 4,000 ...
It was formed approximately 4.5 billion years ago, is a terrestrial planet and is the second smallest of the Solar System 's planets with a diameter of 6,779 km (4,212 mi). A Martian solar day ( sol) is 24.5 hours and a Martian solar year is 1.88 Earth years (687 Earth days). Mars has two small and irregular natural satellites: Phobos and Deimos.
Earth is home to more than 16,000 species of plants, animals, fungi, and algae currently listed as endangered. Given that human-made threats—such as habitat fragmentation, overhunting, overfishing, global warming, and pollution —are the major drivers of extinctions, the preservation and recovery of endangered species depend on human awareness.
2001 – The September 11 attacks, a series of coordinated terrorist attacks killing 2,977 people using four aircraft hijacked by 19 members of al-Qaeda. Two aircraft crash into the World Trade Center in New York City, a third crashes into The Pentagon in Arlington County, Virginia, and a fourth into a field near Shanksville, Pennsylvania.
Apr 19, 2024 · October 11, 1986 - October 12, 1986. Location: Iceland. Reykjavík. Context: Cold War. Key People: Mikhail Gorbachev. Ronald Reagan. On the Web: Atomic Heritage Foundation - The National Museum of Nuclear Science & History - Reagan and Gorbachev: The Reykjavik Summit (Apr. 19, 2024) (Show more)
- The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica is the oldest English-language general encyclopedia. The Encyclopaedia Britannica was first published in 1768, when it began to appear in Edinburgh, and its first digital version debuted in 1981. In 1994 Britannica released the first Internet-based encyclopedia, and Britannica.com was launched in 1999.
Encyclopædia Britannica, Inc. is the company known for publishing the Encyclopædia Britannica, the world's oldest continuously published encyclopaedia. The company also owns the American dictionary publisher Merriam-Webster , and though historically British, is now based in Chicago , USA.
