Originally published on Fri September 6, 2013 1:56 pm
Sure you're steamed. But teenagers tend to meet harsh words with even worse behavior, a study says.
Credit Katherine Streeter
Most parents yell at their kids at some point. It often feels like the last option for getting children to pay attention and shape up.
But harsh verbal discipline may backfire. Teenagers act worse if they're yelled at, a study finds.
Researchers asked parents of 13-year-olds in the Philadelphia area how often in the past year they'd yelled, cursed or called the kid "dumb or lazy or some other word like that" after he or she had done something wrong.
Stanley Kunitz, one of our great poets, planted a spruce tree next to his house in Provincetown, Mass., and over the years that tree attracted some tenants, a family of garden snakes. I didn't know garden snakes climb trees, especially needly ones like a spruce, but they do.
A brain that trains can stay in the fast lane. That's the message of a study showing that playing a brain training video game for a month can rejuvenate the multitasking abilities of people in their 60s, 70s and 80s.
"After training, they improved their multitasking beyond the level of 20-year-olds," says Adam Gazzaley, one of the study's authors and a brain scientist at the University of California, San Francisco.
Navajo encryption boxes seen at right in 2003 employ principles of quantum physics. The latest research has shown the ability to run larger networks with less such hardware.
Credit Elise Amendola / Associated Press
Scientists have demonstrated the ability to scale-up an 'uncrackable' computer encryption system that utilizes quantum physics to ensure security.
The technique is based on information that is carried by photons, the basic particles of light. While it's been demonstrated on a small scale, the team headed by Andrew Shields and publishing in Nature says they've shown that up to 64 users can share a single photon detector, eliminating the need for each one to have such an (expensive) device.
Hot summer days often mean air pollution warnings in big cities. But the air inside your kitchen can sometimes be just as harmful. Cooking fumes from your stove are supposed to be captured by a hood over the range — but even some expensive models aren't that effective.
Jennifer Logue spends a lot of time thinking about what happens when she cooks. She's a research scientist at Lawrence Berkeley National Lab, where she studies indoor air pollution.
Originally published on Wed September 4, 2013 1:49 pm
By Marcelo Gleiser
The Milky Way fills the night sky over Chile's Cerro Paranal, home to the European Southern Observatory's Very Large Telescope (VLT).
Credit Y.Beletsky / ESO
Would you like to see yourself in the future? If you found a magic mirror capable of showing your image one, two or three decades away, would you look? I imagine opinions would be split on the wisdom of gazing into this special reflector.