878,761 articles

Single gene variant in donors may affect survival of transplanted kidneys

A single genetic variant in kidney donors' cells may help determine whether their transplanted organs will survive long term, according to a new study. The findings provide new information that might be used to improve transplant longevity by revealing that the genetic make-up of kidney transplant donors affects the survival of transplanted...

Las Cumbres Observatory achieves first light with NRES spectrograph

Las Cumbres Observatory Global Telescope (LCOGT), a private, nonprofit scientific institution conducting time domain astrophysics and education, and a provider of global telescope resources, achieved first light with their prototype Network of Robotic Echelle Spectrograph (NRES) this week. The event took place earlier in the week at LCOGT's Byrne Observatory located at the UC Santa Barbara...

Mars rock touched by Curiosity has surprises

(Phys.org)—The first Martian rock NASA's Curiosity rover has reached out to touch presents a more varied composition than expected from previous missions. The rock also resembles some unusual rocks from Earth's interior.

New studies reveal connections between animals' microbial communities and behavior

(Phys.org)—New research is revealing surprising connections between animal microbiomes—the communities of microbes that live inside animals' bodies—and animal behavior, according to a paper by University of Georgia ecologist Vanessa O. Ezenwa and her colleagues. The article, just published in the Perspectives section of the journal Science, reviews recent developments in this emerging...

Researchers make Sudoku puzzles less puzzling

For anyone who has ever struggled while attempting to solve a Sudoku puzzle, University of Notre Dame researcher Zoltan Toroczkai and Notre Dame postdoctoral researcher Maria Ercsey-Ravaz are riding to the rescue. They can not only explain why some Sudoku puzzles are harder than others, they have also developed a mathematical algorithm that solves Sudoku puzzles very quickly, without any guessing...

Swedish government to crack down on hackers

The Swedish government said on Thursday it planned to crack down on hackers, at a time when the sex assault allegations against WikiLeaks founder Julian Assange has made the country a target of repeated cyber attacks.

Terrorism risk greatest for subway/rail commuters, says MIT paper at INFORMS conference

Despite homeland security improvements since September 11, 2001, subway and rail commuters face higher risks of falling victim to terrorists and mass violence than frequent flyers or those engaged in virtually any other activity. And while successful criminal and terrorist acts against aviation have fallen sharply, those against subways and commuter trains have surged. These are among the findings...

Tying our fate to molecular markings

(Phys.org)—A Simon Fraser University physicist has helped discover that understanding how a chemical mark on our DNA affects gene expression could be as useful to scientists as fingerprints are to police at a crime scene.

US Navy Working on Improvising 'MacGyver' Robots

Handy humans such as MacGyver can think of fast fixes for almost any scenario, but robots would still have trouble just getting around a fire or using a crowbar to pry open a stuck door. The U.S. Navy plans to help make a robotic MacGyver with almost $1 million in...

Animals' microbial communities linked to their behavior

New research is revealing surprising connections between animal microbiomes -- the communities of microbes that live inside animals' bodies -- and animal behavior. A new article reviews recent developments in this emerging research area and offers questions for future...