The High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter captured views of comet C/2013 A1 Siding Spring while that visitor sped past Mars on Sunday (Oct. 19), yielding information about its nucleus.
NASA’s Mars Exploration Rover Opportunity captured images of a comet passing much closer to Mars than any previous known comet flyby of Earth or Mars. The images of comet Siding Spring were taken against a backdrop of the pre-dawn Martian … Continue reading
Physicists report that they’ve used a new imaging technique, electrostatic force microscopy, to resolve the biological debate with evidence from physics, showing that electric charges do indeed propagate along microbial nanowires just as they do in carbon nanotubes, a highly … Continue reading
For the last 20 years, scientists have tried to design large DNA crystals with precisely prescribed depth and complex features — a design quest just fulfilled by scientists. The team built 32 DNA crystals with precisely-defined depth and an assortment … Continue reading
Sequencing the DNA of children with mystery genetic disorders produced a definitive diagnosis in 40 percent of one hospital’s most complex cases — a quantum leap from the field’s 5-percent success rate 20 years ago.
The migration of millions of birds across the face of the planet is one of nature’s greatest annual events. Every spring some species move in one direction, while every autumn those same species move in the opposite one, very often … Continue reading
People who play action video games such as Call of Duty or Assassin’s Creed seem to learn a new sensorimotor skill more quickly than non-gamers do, psychology researchers have found.
Among patients with an autoimmune disease called ANCA-associated vasculitis, autoantibody increases were linked with an 11-fold increased risk of relapse in patients whose kidneys were affected, a study concludes. Among patients without kidney involvement, such increases were associated only weakly … Continue reading
In what seems like a counter-intuitive move against survival, within animals, some cells are fated to die from the triggering of an elaborate cell death program, known as apoptosis. Now, researchers have honed in on understanding the evolution of caspase-8, … Continue reading
Contrary to current dietary recommendations, slow and steady weight loss does not reduce the amount or rate of weight regain compared with losing weight quickly, new research has found.
Emily loves Justin, Stop global warming, Two more weeks till I graduate! The exchange of information in public toilets is widespread. It also occurs in the world of white-footed sportive lemurs. Only instead of writing on the walls, they use … Continue reading
The first evidence of the medium-term to long-term safety and tolerability of transplanting human embryonic stem cells (hESCs) in humans has been revealed by scientists. hESC transplants used to treat severe vision loss in 18 patients with different forms of … Continue reading
Earth’s last magnetic reversal took place 786,000 years ago and happened very quickly, in less than 100 years — roughly a human lifetime. The rapid flip, much faster than the thousands of years most geologists thought, comes as new measurements … Continue reading
Recent studies have found that crocodiles and their relatives are highly intelligent animals capable of sophisticated behavior such as advanced parental care, complex communication and use of tools for hunting. New research shows just how sophisticated their hunting techniques can … Continue reading