Arizona,United States

Jennifer Wunder, an associate English professor at Georgia Gwinnett College in Lawrenceville, Ga., says she likes to keep her college-provided cell phone handy to send text messages and e-mails to students.

Wunder, 38, says her interaction with students is way up because she's reaching students on the same device they use.

"It's an incredible educational opportunity," she said.

On Jan. 7, she'll join about 75 fellow employees who will unplug their office phone and go wireless for good, said Lonnie Harvel, the school's chief information officer.

British retailer Tesco entered the U.S. market only last year but already it has managed to put Wal-Mart, the world's No. 1 retailer, on the defensive. Tesco fired the first salvo, in a battle that retailing analysts expect will intensify, by launching Fresh & Easy, a chain of 10,000-square-foot convenience stores, in cities across California, Nevada, and Arizona in November 2007. Eleven months later, Wal-Mart returned fire, taking on Tesco in Arizona with the debut of the similar-size Marketside, its first new store format in a decade.

by Anjuli Raza Kolb

Do biofuels compete with food for land resources? The debate rages on. University of Arizona biologist Robert Glenn, though, has a great compromise – grow the biofuels under the sea, where they won’t get in the way of food production.

Do biofuels compete with food for land resources?  The debate rages on.  University of Arizona biologist Robert Glenn, though, has a great compromise – grow the biofuels under the sea, where they won’t get in the way of food production.

Do biofuels compete with food for land resources? The debate rages on. University of Arizona biologist Robert Glenn, though, has a great compromise – grow the biofuels under the sea, where they won’t get in the way of food production.

Did your parents tell you to remember your scarf when you went out, so you wouldn't catch a cold? Today, the advice might be: Remember your cell phone.

A maker of over-the-counter cold and flu remedies released a program this week for the T-Mobile G1, also known as the "Google phone," that warns the user how many people in an area are sneezing and shaking with winter viruses.

CNN correspondent Jessica Yellin's virtual visit to the network's New York studio from a trailer outside President-elect Barack Obama headquarters in Chicago may not have been a hologram, as dozens of bloggers have spent the last 48 hours pointing out, but it was a tantalizing glimpse of the future.

On Tuesday night, during CNN's election coverage, host Wolf Blitzer warned viewers that "I want you to watch what we're about to do, because you've never seen anything like this on television."

Though the final word is not in yet, the great, great disappointment last night is the blow to equal rights in California in the form of proposition 8, and bans on same-sex marriage in other states.  In the San Francisco Chronicle: Opponents of the measure, gathered at the Westin St. Francis Hotel
in San Francisco, tried to put the best face on the disappointing
results.

Travelers lugging laptop computers worry about losing them -- with good reason. The hardware is worth hundreds or thousands of dollars, and lost or stolen data could be priceless.

But safeguarding your machine is no cinch.

Just ask Luke M. Ford, founder and chief executive of My Computer Works Inc., a tech-support company in Scotts-dale, Ariz.

On a recent jaunt to San Diego, he stashed his $1,400 laptop under a desk in his hotel room. When he returned 30 minutes later, it was gone. His traveling companion had left the door open.