21st century BC

(22nd century BC - 21st century BC - 20th century BC - other centuries)

(4th millennium BC - 3rd millennium BC - 2nd millennium BC)


Events:
  • 2130 - 2080 BC -- Ninth Dynasty wars in Egypt
  • 2112 - 2095 BC -- Sumerian campaigns of Ur-Nammu
  • 2064 - 1986 BC -- Twin Dynasty wars in Egypt
  • 2049 BC - Oak trees for Seahenge felled.
  • 2040 BC -- End of Tenth Dynasty of Egypt
  • 2034 - 2004 BC -- Ur-Amorite wars
  • 2004 BC -- Elamite destruction of Ur
  • 2000 BC -- The town of Mantua was presumedly founded

Significant persons: Inventions, Discoveries, Introductions:
  • 2000 BC -- First written accounts of Schizophrenia.
  • 2037 BC -- Emperor Shen Nong makes first (perhaps mythical) tea drink by boiling fresh leaves


In the News

Global Warming Is Destroying Coral Reefs, Major Study Warns
Major new research indicates that coral reefs won't survive the rapid increases in global temperatures and atmospheric carbon dioxide forecast by the IPCC. The livelihoods of 100 million people living along the coasts of tropical developing countries will be among the first casualties. Marine scientists argue for drastic action by world leaders on carbon dioxide emissions. Immediate use of proven policy and management tools to address over-fishing, pollution and unsustainable coastal development is critical to saving coral reefs.

Why You Don't Need Vista Now
When Windows Vista becomes widely available next month, it will have been more than five years since Microsoft released a new operating system. So, is Vista worth the wait? By Bruce Gain.

Folksonomies Tap People Power
This February 2005 article discusses folksonomies, which are user-created tagging systems found on Web sites such as Flickr and del.ici.ous. Challenges of and possible applications for folksonomies are the focus of this Wired News article.

Designer Duo Create Dress With 24,000 LEDs
Two London-based designers have created a dress embroidered with 24,000 full color LEDs and 4,000 Swarovski crystals for a museum exhibit in Chicago.


Fact Sheet: Landslides and Mudslides
Fact sheet about landslides, which "occur when masses of rock, earth, or debris move down a slope,"and about debris flows, also known as mudslides, which "are a common type of fast-moving landslide that tends to flow in channels."Provides discussion of causes, health threats, and protection ideas. Also includes links to related sites. From the Centers for Disease Control and Prevention (CDC).

Applied Scientists Create Wrinkled 'Skin' On Polymers
Applied scientists demonstrated a new method for developing wrinkled hard skins on the surface areas of polymers using a focused ion beam. The technique has potential use for biological sensors and microfluidic devices and may offer new ways to build custom-made cell templates for tissue engineering.

I Want You ... Badly: A Complete Guide to Uncle Sam's Recruiting Incen
This November 2007 feature provides a chart of U.S. Army recruiting and retention programs, such as enlistment and deferred enlistment bonuses, money for college, student-loan repayment, and retention bonuses. Includes target audiences and descriptions of the programs with links to further information. From the online magazine Slate.

Seattle and King County Food Bank Resource Directory
Find listings for food pantries, emergency food bags, food for infants and babies, and other emergency food programs in neighborhoods in Seattle and King County, Washington state. Includes food pantries serving specific populations (such as Asian and Pacific Islanders and people with HIV/AIDS) and food banks serving all of Seattle or King County. From the City of Seattle Human Services Department.

Writing With Pictures: Toward A Unifying Theory Of Consumer Response T
Images in contemporary consumer culture may be seen as an emergent form of writing. Researchers argue that mass communications technology has created a "cultural classroom"in which the world's first democratic pictography has developed. They support this argument with a series of experiments that demonstrate contemporary consumers'ability to read pictures -- even abstract images -- as statements of product features.

Machine that visually inspects and sorts strawberry plants invented
Researchers have developed a plant-sorting machine that uses computer vision and machine learning to inspect and grade harvested strawberry plants and then mechanically sort them by quality -- tasks that until now could only be done manually.




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