833,896 articles

Opportunity runs the first martian marathon

With all the fanfare about Mars rover Curiosity landing on the Red Planet in August 2012, it’s easy to forget that there’s already a rover on Mars—an older, smaller cousin set to accomplish a feat unprecedented in the history of Solar System exploration.

Researchers discover how western corn rootworm resists crop rotation

A new study answers a question that has baffled researchers for more than 15 years: How does the western corn rootworm – an insect that thrives on corn but dies on soybeans – persist in fields that alternate between corn and soybeans? The answer, researchers say, has to do with enzyme production in the rootworm gut.

Researchers zap huge global spam 'botnet'

A huge global 'botnet' responsible for sending out millions of spam messages each day has been shut down by a collaborative effort from security experts in the US, Britain and Russia, researchers said.

The long, winding road to advanced batteries for electric cars

(Phys.org) -- Batteries have come a long way since Alessandro Volta first discovered in 1800 that two unlike metals, when separated by an acidic solution, could produce an electric current. In their evolution, batteries have taken on various forms, ranging from lead-acid, to nickel-metal hydride, to current-day lithium-ion.

What we know and don't know about Earth's missing biodiversity

Most of the world's species are still unknown to science although many researchers grappled to address the question of how many species there are on Earth over the recent decades. Estimates of non-microbial diversity on Earth provided by researchers range from 2 million to over 50 million species, with great uncertainties in numbers of insects, fungi, nematodes, and deep-sea organisms.

Washington Reveals Voter Registration on Facebook

Facebook users in Washington state will have something else to brag about to their online friends: that they registered to vote on Facebook. The secretary of state's office said Tuesday it will have an application on its Facebook page that allows residents to register to vote and then "like" the application and recommend it to their friends. It's expected to launch as early as next week. "In...

Growing Number of Communities Using Smart911

A man who called 911 in Nashville recently was too ill to speak to the dispatcher. That could have been a life-threatening situation, says Duane Phillips, director of Emergency Communications Center in metro Nashville. But because the man had registered with a new 911 database called Smart911 and detailed his health issues, the dispatcher knew what to do. "Normally, we handle that as an open...

Rotten Tomatoes Suspends Dark Knight Comments

The aggregating Web site RottenTomatoes.com suspended user comments on movie reviews of "The Dark Knight Rises" after commenters reacted harshly to negative reviews of the film and made profane and threatening remarks about the critics who wrote them. Matt Atchity, the site's editor-in-chief, said Tuesday it was the first time RottenTomatoes.com has suspended user comments, adding postings...

Yahoo CEO's Pregnancy Overshadows Flat Revenue

Yahoo hopes it picked a savior when it chose Googler Marissa Mayer as CEO in hopes of resuscitating business and birthing an improbable comeback. Turns out Mayer, 37, is expecting the real thing, too. She disclosed on her Facebook profile late Monday that she's pregnant. Mayer first disclosed her pregnancy to Yahoo in late June, according to a Fortune report. Though Yahoo posted flat sales...

Farmers' Hopes Dry Up in Midwest Drought

Ask Craig Ganshorn how his corn crop is faring and he winces before replying. "Basically, it's burnt up," he says. Ganshorn, 62, who has farmed 500 acres of corn and soybeans here since 1976, is confronting the grim realities of a drought that he says is worse "by far" than the one in 1988 that's remembered as among the worst in U.S. history. Ganshorn's farm is in Kosciusko County, which is...

Photo: Dazzling Aurora Appears Over Antarctic Station

The handful of wintertime residents at an isolated Antarctica research station recently got a break from austral winter's 24-hour darkness when a shimmering aurora blazed to life over their lonely outpost in the middle of the East Antarctic Ice...

We Punish Out of a Desire for Fairness, Not Revenge

Punishment helps discourage the dishonest from destroying the fabric of cooperative human societies. But that's not what you actually think about when you feel the urge to punish a rule-breaker. Scientists have long debated what motivates humans' deep-seated desire for retaliation, which we'll carry out even at great personal cost.

Controlling a Computer with Your Eyes

A new ultra-cheap way for the paralyzed to interact with computers. Researchers at Imperial College London have developed an affordable technology that could allow millions of people suffering from ailments like Parkinson’s, muscular dystrophy, or spinal cord injury to interact with computers--using just their eyes. The finding brings new hope to many patients that computing--and the many...