The term artificial airglow describes the intentional augmentation or production of atmospheric airglow which is the earth’s atmosphere’s natural light emission. This phenomenon, which can be seen at different altitudes, is brought on by solar and cosmic radiation interacting with atmospheric molecules like oxygen and nitrogen. The dim, diffuse, and typically greenish light produced by artificial airglow is most noticeable at night and has long been studied for its unique celestial properties.

Four days of research and experimentation

Now, the high-frequency radio wave transmitter called the High-Frequency Active Auroral Research Program (HAARP) facility in Alaska will create the phenomenon in the sky for four days starting from Saturday in order to conduct experiments on the ionosphere, a region of our planet’s upper atmosphere that contains a high concentration of ions and free electrons and extends from about 30 miles (50 kilometers) above the earth’s surface to several hundred miles in altitude.

A new study reveals a previously undiscovered way that we can feel light touches: directly through our hair follicles.

Before now, it was thought that only nerve endings in the skin and around the hair follicles could transmit the sensation.

The team behind the study, led by researchers from Imperial College London in the UK, used an RNA sequencing process to find that cells in part of the hair follicle called the outer root sheath (ORS) had a higher percentage of touch-sensitive receptors than equivalent cells in the skin.

In a recent study published in Nature Communications, researchers report that osteoarthritis (OA) is caused by the loss of Gremlin 1 (Grem1)-lineage chondrogenic progenitor (CP) cells.

Study: Loss of Grem1-lineage chondrogenic progenitor cells causes osteoarthritis. Image Credit: airdone / Shutterstock.com.

A giant underground pyramid hidden beneath a hillside in Indonesia far outdates Stonehenge or the Giza Pyramids and may come to rival the oldest megalithic structures ever built by human hands.

Remember the name Gunung Padang.

The exceptional hillside of ancient stone structures on the island of West Java is sacred to locals, who call this kind of structure a ‘punden berundak’, meaning stepped pyramid, for the terraces that lead to its peak.

If you’re like lots of us, you either have or have had back pain. WebMD looks at what can cause it.

🔐 Researchers uncover vulnerabilities in 34 Windows drivers that non-privileged hackers can exploit to take control of your device and execute code.

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Electrons can help infer laser intensities that are too high to measure using conventional methods.

In a world filled with endless connections and constant communication, the relationship between loneliness and aloneness is not always clear. Now, University of Arizona researchers have analyzed that relationship—and found that they are two different things that are not closely correlated.

People don’t feel lonely until they spend three-quarters of their time alone, the study found. However, when their alone time goes beyond 75%, it becomes difficult for them to avoid feelings of loneliness.

Published in the Journal of Research in Personality in September, the study also concludes that among older adults, there is a particularly strong association between time spent alone and feeling lonely. The study was led by Alex Danvers, a former postdoctoral associate at UArizona, and Liliane Efinger, a former visiting graduate student.

‘3D Pin’ technique helps researchers form stable bonds between suspended nanocrystals to create robust 3D structures.