View a video of WolfQuest, an interactive computer game in which players are immersed in every aspect of a wolf's survival in its habitat.

It's bad enough that I haven't found a mate. I'm also hungry and I'm losing stamina. I've lost the rest of my group and a large grizzly bear has positioned himself across my path. What's a wolf to do?

Adopting the identity of a wolf is the key to learning about wolf behavior and ecology in WolfQuest, a computer game developed and hosted by the Minnesota Zoo with funding from the National Science Foundation. WolfQuest is one example of how, through computer gaming technology, learning can reach across time and space and link learners to a set of challenges--along with a set of tools to address them, and the motivation to succeed. Other such projects developed with NSF funding include "Project IT Girl," a project that involves high-school girls in designing and developing educational games, and LunarQuest, a multiple-player game that aims to support the learning of physics.

Through computer games, a single player can immerse himself or herself in a problem that demands the tools of science or math to solve it. The technology can also link a team of players who must work together and pool their resources to address issues. Just as the technology provides a network for learning, it also provides a trail of results detailing the players' success in rising to the challenges presented.........

Having worked for 25 years at fragile archaeological sites in Peru, UCLA archaeologist Charles "Chip" Stanish held his breath when the online auction
house eBay launched more than a decade ago.

"My greatest fear was that the Internet would democratize antiquities trafficking, which previously had been a wealthy person's vice, and lead to widespread looting," said the UCLA professor of anthropology, who directs the UCLA Cotsen Institute of Archaeology.

Indeed, eBay has drastically altered the transporting and selling of illegal artifacts, Stanish writes in an article in the May/recent issue of Archaeology, but not in the way he and other archaeologists had feared.

By improving access to a worldwide market, eBay has inadvertently created a vast market for copies of antiquities, diverting whole villages from looting to producing fake artifacts, Stanish writes. The proliferation of these copies also has added new risks to buying objects billed as artifacts, which in turn has worked to depress the market for these items, further reducing incentives to loot.

"For most of us, the Web has forever distorted the antiquities trafficking market in a positive way," Stanish said.

Looting, which is illegal, is widely recognized as destructive to cultural heritage because it can remove from public ownership tangible links to a people's past. In addition, looting is perceived as the enemy of scholarship because it typically is done without regard to any appropriate methods that allow researchers to date objects and to place them in a larger, more meaningful context........

The need for improved monitoring of neurotrauma patients has resulted in the development of a prototype of a novel, multitasking "lab on a tube" at the University of Cincinnati (UC).

UC engineers, working to fill a need expressed by physicians at the Neurotrauma Center at the UC Neuroscience Institute, have developed a preliminary working model of the multimodal tube, or "smart sensor," which is capable of continuously monitoring multiple physiological parameters in patients. The tube also is capable of draining excess cerebrospinal fluid from the injured brain and could be used to deliver medications to the patient.

Eventhough the monitoring device is still not ready for testing in humans, UC scientists hailed it as "a groundbreaking start".

Raj Narayan, MD, chairman and Frank Mayfield professor in the department of neurosurgery and the project's principal investigator, and Lori Shutter, MD, director of neurocritical care, expressed the need for a multimodality monitoring device for neurotrauma patients and participated in its design and creation.

The prototype for a smart neuro-catheter was then engineered by Chunyan Li, PhD, a postdoctoral fellow in the UC department of neurosurgery who trained under Chong Ahn, PhD, professor in the department of electrical and computer engineering. Concepts for a "lab on a tube" device with multimodality sensors were developed in the Microsystems and BioMEMS Laboratory headed by Ahn.........

Splash, splatter, babble, sploosh, drip, drop, bloop and ploop!

Those are some of the sounds that have been missing from computer graphic simulations of water and other fluids, as per scientists in Cornell's Department of Computer Science, who have come up with new algorithms to simulate such sounds to go with the images.

The work by Doug James, associate professor of computer science, and graduate student Changxi Zheng will be reported at the 2009 ACM SIGGRAPH conference Aug. 3-7 in New Orleans. It is the first step in a broader research program on sound synthesis supported by a $1.2 million grant from the Human Centered Computing Program of the National Science Foundation (NSF) to James, assistant professor Kavita Bala and associate professor Steve Marschner.

In computer-animated movies, sound can be added after the fact from recordings or by Foley artists. But as virtual worlds grow increasingly interactive and immersive, the scientists point out, sounds will need to be generated automatically to fit events that can't be predicted in advance. Recordings can be cued in, but can be repetitive and not always well matched to what's happening.

"We have no way to efficiently compute the sounds of water splashing, paper crumpling, hands clapping, wind in trees or a wine glass dropped onto the floor," the scientists said in their research proposal.........

Computers have made it virtually impossible to leave the past behind. College Facebook posts or pictures can resurface during a job interview. A lost cell phone can expose personal photos or text messages. A legal investigation can subpoena the entire contents of a home or work computer, uncovering incriminating, inconvenient or just embarrassing details from the past.

The University of Washington has developed a way to make such information expire. After a set time period, electronic communications such as e-mail, Facebook posts and chat messages would automatically self-destruct, becoming irretrievable from all Web sites, inboxes, outboxes, backup sites and home computers. Not even the sender could retrieve them.

"If you care about privacy, the Internet today is a very scary place," said UW computer scientist Tadayoshi Kohno. "If people understood the implications of where and how their e-mail is stored, they might be more careful or not use it as often."

The team of UW computer researchers developed a prototype system called Vanish that can place a time limit on text uploaded to any Web service through a Web browser. After a set time text written using Vanish will, in essence, self-destruct. A paper about the project went public today and will be presented at the Usenix Security Symposium Aug. 10-14 in Montreal......

More computers discarded by consumers in the United States are getting a second life in developing countries than previously believed, as per a newly released study the most comprehensive ever done on the topic reported in ACS' semi-monthly journal Environmental Science & Technology The findings may ease growing concerns about environmental pollution with toxic metals that can result from dismantling and recycling computer components in developing countries.

In the study Ramzy Kahhat and Eric Williams focused on the situation in Peru, where Kahhat was born. They used a Peruvian government database that tracks importation of new and used computers and computing equipment. The scientists observed that at least 85 percent of computers imported into Peru are reused, rather than going directly into recycling.

The finding challenges the widespread belief that the trade in e-waste was mainly about dumping unusable junk or recycling components is inaccurate, at least for Peru. The U.S. is the source of up to 76 percent of used computers imported to Peru from 2003-2007, the scientists indicated. They note uncertainty on whether the same holds true for other, much larger countries like China and India..

In the never-ending battle to protect computer networks from intruders, security experts are deploying a new defense modeled after one of nature's hardiest creatures - the ant.

Unlike traditional security devices, which are static, these "digital ants" wander through computer networks looking for threats, such as "computer worms" - self-replicating programs designed to steal information or facilitate unauthorized use of machines. When a digital ant detects a threat, it doesn't take long for an army of ants to converge at that location, drawing the attention of human operators who step in to investigate.

The concept, called "swarm intelligence," promises to transform cyber security because it adapts readily to changing threats.

"In nature, we know that ants defend against threats very successfully," explains Professor of Computer Science Errin Fulp, an expert in security and computer networks. "They can ramp up their defense rapidly, and then resume routine behavior quickly after an intruder has been stopped. We were trying to achieve that same framework in a computer system".

Current security devices are designed to defend against all known threats at all times, but the bad guys who write malware - software created for malicious purposes - keep introducing slight variations to evade computer defenses.........