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Thousands of molecules of ribonucleic acid make salt-loving microbes known as "extremophiles" highly resistant to the phenomenon oxidative stress -- the uncontrollable production of unstable forms of oxygen called "free radicals," which can negatively affect DNA, proteins, and lipids in cells.https://www.sciencedaily.com/releases/2018/03/180302124842.htm
Dutch adventurer Wim Hof is known as 'The Iceman' for good reason. Hof established several world records for prolonged resistance to cold exposure, an ability he attributes to a self-developed set of techniques of breathing and meditation -- known as the Wim Hof Method. Yet, how his brain responds during cold exposure and what brain mechanisms may endow him with this resistance have not been studied -- until now.https://www.sciencedaily.com/releases/2018/02/180228164934.htm
Using two different measurement methods, researchers have conducted a two-year study of North Carolina's Jordan Lake in which they monitored toxic algal blooms. The researchers found that multiple cyanotoxins from toxic algal blooms are present year-round, albeit in very low concentrations.https://www.sciencedaily.com/releases/2018/02/180228164939.htm
Although the call for improving STEM education is widespread, there is little guidance for teachers on how to do so. A team set out to outline challenges and find best practices for teachers to better integrate science, technology, engineering and math in their classrooms.https://www.sciencedaily.com/releases/2018/02/180227155844.htm
Athletes who suffer life-threatening heat stroke should be cooled on site before they are taken to the hospital, according to a new article. The principle of 'cool first, transport second' differs from the usual practice of calling 911 and getting to the hospital as soon as possible.https://www.sciencedaily.com/releases/2018/02/180227155846.htm
Researchers have built a metasurface-based lens atop a Micro-Electro-Mechanical System (MEMS) platform. The result is a new, infrared light-focusing system that combines the best features of both technologies while reducing the size of the optical system.https://www.sciencedaily.com/releases/2018/02/180227184614.htm
A new microfluidic device may help realize the potential of tumor-derived extracellular vesicles -- tiny lipid particles that carry molecules through the bloodstream -- as biomarkers that could monitor a tumor's response to therapy and provide detailed information to guide treatment choice.https://www.sciencedaily.com/releases/2018/02/180227155856.htm