Human pluripotent stem cells, which can develop into any cell type in the body, rely heavily on glycolysis, or sugar fermentation, to drive their metabolic activities.
In contrast, mature cells in children and adults depend more on cell mitochondria to convert sugar and oxygen into carbon dioxide and water during a high energy–producing process called oxidative phosphorylation. (more…)
A team of researchers led by the University of Colorado Boulder has discovered the first prehistoric bronze artifact made from a cast ever found in Alaska, a small, buckle-like object found in an ancient Eskimo dwelling and which likely originated in East Asia. (more…)
COLUMBIA, Mo. – Manufactured until 1977, and banned by the Environmental Protection Agency in 1979, pentachlorobiphenyls (PCBs) are chemicals still commonly found in the environment because they break down slowly. (more…)
*A decade after its introduction, Xbox has grown into a global gaming phenomenon. A selection of highlights from the past 10 years.*
REDMOND, Wash. (Nov. 15, 2011) –– It’s hard to believe, but 10 years ago today, Microsoft introduced the world to Xbox, noting that the gaming system was “erupting” on the scene. The gaming system set sales records, with 100,000 units per week shipping to retailers in the first weeks after its launch. According to NPD Group, Microsoft sold 1.5 million Xbox units in North America between the Nov. 15 launch and the end of calendar year 2001, making Xbox the best-selling video game console launch on record. (more…)
ANN ARBOR, Mich.— A University of Michigan biologist and his colleagues have found that the strategies used by the tiny C. elegans roundworm to control its motions are remarkably similar to those used by the human brain to command movement of eyes, arms and legs. (more…)
A research team led by Yale University scientists has for the first time determined the original colors of an ancient moth, based on nearly 50 million-year-old fossils from Germany. (more…)
PASADENA, Calif. — NASA’s Voyager 2 has successfully switched to the backup set of thrusters that controls the roll of the spacecraft. Deep Space Network personnel sent commands to the spacecraft to make the change on Nov. 4 and received confirmation today that the switch has been made.
The change allows engineers to reduce the amount of power that the 34-year-old spacecraft needs to operate by turning off the heater that keeps the fuel to the primary thrusters warm. Although the rate of energy generated by Voyager 2’s nuclear power source continues to decline, by reducing its power requirements, engineers expect the spacecraft can continue to operate for another decade. (more…)
*Blue Gene/Q tackles major challenges of the day, delivers up to 100 petaflops at peak performance*
ARMONK, NY – 15 Nov 2011: IBM today announced its next generation supercomputing project, Blue Gene/Q, will provide an ultra-scale technical computing platform to solve the most challenging problems facing engineers and scientists at faster, more energy efficient, and more reliable rates than ever before. Blue Gene/Q is expected to predict the path of hurricanes, analyze the ocean floor to discover oil, simulate nuclear weapons performance and decode gene sequences.
When it is fully deployed in 2012 at Lawrence Livermore National Laboratory (LLNL), the system, named “Sequoia”, is expected to achieve 20 petaflops at peak performance, marking it as one of the fastest supercomputers in the world. The capabilities this system represents will help ensure United States leadership in high performance computing (HPC) and the science it makes possible. Moreover, Blue Gene/Q is expected to become the world’s most power-efficient computer, churning out 2 gigaflops per watt. (more…)
