admin February 21, 2018

The thermoelectric effect is nothing new — it was discovered almost 200 years ago by Thomas J. Seebeck. If two different metals are brought together, then an electrical voltage can develop if one metal is warmer than the other. This effect allows residual heat to be partially converted into electrical energy. Residual heat is a […]

admin February 21, 2018

Scientists at Yale and UC San Diego have discovered why typhoid toxin targets only humans, revealing a single oxygen atom is the cause. The bacterium Salmonella Typhi causes typhoid fever in humans, but leaves other mammals unaffected. Researchers at University of California, San Diego and Yale University Schools of Medicine now offer one explanation — […]

admin February 21, 2018

Old, complex tropical forests support a wider diversity of birds than second-growth forests and have irreplaceable value for conservation, according to an Oregon State University-led exhaustive analysis of bird diversity in the mountains of southern Costa Rica. To reach their conclusions, a team led by Urs Kormann, a post-doctoral scientist in the College of Forestry […]

admin February 21, 2018

Regular earthquakes are bad enough. Volcanoes too. But an earthquake swarm at a supervolcano? That really sounds like it could be scary, and scientists say they’ve just detected such a phenomenon at the site of Yellowstone caldera. According to geophysicists with the United States Geological Survey (USGS), the past fortnight has seen Yellowstone supervolcano shaken by a swarm of over 200 […]

admin February 21, 2018

There is a great deal of misinformation out there regarding genetically modified organisms (GMOs). From monikers like “Frankenfoods” to general skepticism, there has been a variety of biased reactions to these organisms, even though we as a species have been genetically modifying our foods in one way or another for approximately 10,000 years. Perhaps some of this distrust will […]

admin February 20, 2018

It’s been a conflicting few months on this blue orb of ours, but nothing puts life into perspective like a photo taken by a probe literally millions of miles from home. OSIRIS-REx, an asteroid-sampling spacecraft, took the photo below as part of an engineering test on January 17 2018. The spacecraft was moving away from […]

admin February 20, 2018

SpotMini, Boston Dynamics’s dog-like quadruped robot, is back, and it’s learned a new trick. The robot, which was unveiled in June 2016 and then updated in November 2017, can now open doors and hold them open. While opening a door is slightly old hat for a Boston Dynamics robot – Atlas barrelled through a push-bar door two years ago – SpotMini’s operation […]

admin February 20, 2018

Abstract Cancer cells adapt to their inherently increased oxidative stress through activation of the glutathione (GSH) and thioredoxin (TXN) systems. Inhibition of both of these systems effectively kills cancer cells, but such broad inhibition of antioxidant activity also kills normal cells, which is highly unwanted in a clinical setting. We therefore evaluated targeting of the […]