Canadian bedrock more than four billion years old may be the oldest known section of the Earth's early crust, say scientists at the Carnegie Institution. They used geochemical methods to obtain an age of 4.28 billion years for samples of the rock, making it 250 million years more ancient than any previously discovered rocks. The findings offer scientists clues to the earliest stages of our planet's evolution, they say.

"There have been older dates from Western Australia for isolated resistant mineral grains called zircons," says Richard Carlson of the Carnegie Institution's Department of Terrestrial Magnetism, "but these are the oldest whole rocks found so far."

LONDON and SAN FRANCISCO, September 25 /PRNewswire/ --

- DeFi Global Access(TM) Members Enjoy Carrier-Grade Network, Feature Rich Unlimited Global Calling, and Worldwide Automated Access Point Connections

DeFi Mobile(TM) today announced the launch of DeFi Global Access(TM), a subscription-based service enabling its members to make and receive unlimited phone calls worldwide via WiFi access to DeFi Mobile's carrier-grade, global IP network - all for a flat monthly fee of ~23 pounds sterling/ 29 euro / US$40. The service also includes unlimited worldwide Internet and data access for mobile device web browsing and e-mail.

For a Limited Time, Sign-Up Now and Receive the 1st Month Service Free

NEWCASTLE UNDER LYME, England, September 25 /PRNewswire/ -- BitDefender's Total Security 2009 comes with a number of new features and enhancements including, Instant Messaging encryption, home network management and an online backup option.

"Building on experience gained in over a decade of product development, this launch of the 2009 version follows one of the most extensive, global beta test programmes so far undertaken by BitDefender, " says Nick Billington country manager for the UK and Ireland.

"As well as added functionality we have enhanced performance in order to keep BitDefender at the forefront of proactive protection for PCs," says Nick Billington.

LONDON, September 25 /PRNewswire/ --

- Arriva Scandinavia Commissions Multimesh(TM) Enabled Broadband Internet Access for Copenhagen Customers

HILVERSUM, The Netherlands, September 25 /PRNewswire/ --

- Integration of PC and Phone is Key in Improving Enterprise Business Communications

Research commissioned by NEC, a global leader in enterprise business communications, shows that business is hampered by a lack of communication skills and tools.

With employees exchanging more and more information through various means such as mobile phone, e-mail and IM, it is becoming increasingly challenging for organisations to ensure their staff are able to handle the sea of information and use the various methods of communication efficiently.

INGELHEIM, Germany, September 25 /PRNewswire/ --

- For Healthcare Media Outside the U.S.A., Canada, and Japan

- Favourable Safety and Efficacy Profile of Actilyse(R) Confirmed by ECASS 3 Study Investigating Treatment in an Extended Time Window up to 4.5 Hours After Symptom Onset

First results from ECASS 3 (European Cooperative Acute Stroke Study) were presented today at the 6th World Stroke Congress in Vienna, Austria, showing that treatment with Actilyse(R) (alteplase) between 3 and 4.5 hours after stroke onset can improve clinical outcome. These results were also published today in the New England Journal of Medicine.(1)

To view the Multimedia News Release, please click: http://www.prnewswire.com/mnr/boehringeringelheim/35105/

SAN MATEO, California and COLOGNE, Germany, September 25 /PRNewswire/ --

- Bizanga to Integrate eco's Certified Senders Alliance Whitelist and Make it Available to its Growing Installed Base

ECO, the association of German Internet enterprises, and Bizanga, provider of the world's leading email and message management platform, have today reached an agreement to collaborate on an initiative for sharing a common repository of information between ISPs in order to combat spam effectively without affecting the transmission of legitimate e-mails. In addition, Bizanga will integrate the eco Certified Senders Alliance Whitelist service as part of its ever growing ecosystem of partners and installed base of customers.

TORONTO, Canada and GRAND HAVEN, Michigan, September 25 /PRNewswire/ --

- RedMAX(TM) Products Provide Azulstar's Customers With Higher Speeds, Greater Coverage and Lower Cost Services

Redline Communications Group Inc. ("Redline") (TSX and AIM: RDL), a leading provider of WiMAX and broadband wireless infrastructure products, and Azulstar Inc., a privately held wireless service provider based in Grand Haven, Michigan, today announced the launch of MetraMax(R), Azulstar's new wireless broadband service offering. MetraMax runs on Redline's 3.65 GHz RedMAX WiMAX Forum Certified(R) system and will provide high speed and low cost services to communities in New Mexico.

MIT researchers have designed a new robotic underwater vehicle that can hover in place like a helicopter — an invaluable tool for deepwater oil explorers, marine archaeologists, oceanographers and others.

The new craft, called Odyssey IV, is the latest in a series of small, inexpensive artificially intelligent submarines developed over the last two decades by the MIT Sea Grant College Program’s Autonomous Underwater Vehicles Laboratory. The Odyssey series revolutionized underwater research in the 1990s by introducing the thrifty and highly capable underwater robots. But the previous Odyssey vehicles still had one significant limitation: Like sharks, they could only operate while continuously moving forward.

How well students and schools succeed in mastering a curriculum that includes English Language Arts (ELA), mathematics, and the social and natural sciences, strongly influences how well the students fare in higher education. In California, student mastery in ELA and mathematics is measured with the California Standards Tests (CST).

Apparently, California is not doing very well. UC Riverside's Richard Cardullo examined several years of CST data and his mathematical models predict that nearly all elementary schools in California will fail to meet even the minimum requirements under the "No Child Left Behind Act of 2001" (NCLB) by 2014.