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Spectrum of light from a frequency comb installed on the High Accuracy Radial Velocity Planet Searcher, Chile. | Photo Credit: ESO A frequency comb is a special kind of laser light whose spectrum, or set of frequencies, resembles the teeth of a comb. Instead of containing just one colour (one frequency), it emits a large…
A drone view of the Aravalli Hills in Ajmer. | Photo Credit: ANI The Aravalli Hills look modest today but they sit on some of the oldest and most studied rocks in India. Geologists care about them because they preserve a long record of how a piece of the earth’s crust in northwestern India was…
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Study authors call for integrated prevention strategies addressing alcohol and tobacco together, and for stronger regulation of locally brewed liquors, which often fall outside formal licensing and quality-control systems. Representative image. | Photo Credit: Getty Images/iStockphoto Alcohol consumption, even in small amounts, significantly increases the risk of buccal mucosa cancer (BMC), a common and aggressive…
Read More “Even low alcohol intake raises oral cancer risk in Indian men: study” »
What is it? Travel is an amazing activity one can take up to explore beyond the horizons of their knowledge. However, there are two sides to everything, both good and…not so good. Jet lag is one of the major drawbacks when one travels past multiple time zones (five or more) by plane. It is a…
Rare-earth elements are a set of metallic elements in the periodic table. Chemists usually refer to a group of 17 elements when they use this label: the 15 lanthanides from lanthanum to lutetium, and scandium and yttrium. In most classroom periodic tables, the lanthanides are shown as a separate row placed beneath the main periodic…
Read More “What are rare-earth elements and why is everyone looking for them? | Explained” »
A spectacled cobra, one of India’s ‘Big Four’ species. | Photo Credit: SPECIAL ARRANGEMENT/The Hindu As India has progressed, the stereotyped image of the “land of snake charmers” has been left behind. We now have snake rescuers. However, in rural areas, snakebites still account for 58,000 deaths every year, affecting workers in paddy fields as…
DNA inside human cells is not free-floating. Instead, it is tightly wrapped around small protein units forming a long chain, with DNA looping around each unit before moving on to the next. This DNA-protein complex is called chromatin and allows nearly 2 m of genetic material to fit inside a nucleus only a few micrometres…
Read More “Just five DNA letters flip chromatin from fluid to solid-like state” »
Scientists have suspected for decades that high-flying mosquitoes could move pathogens far from where the mosquitoes first took an infected blood meal. | Photo Credit: Wolfgang Hasselmann/Unsplash Mosquitoes spread diseases such as malaria and dengue, and these diseases affect billions of people worldwide. Many public health plans assume that pathogens borne by mosquitoes spread over…
Read More “Africa study catches ‘high-flying’ mosquitoes spreading pathogens” »
Science quiz: Giants on whose shoulders Newton stood 1 / 5 | The work of X on falling bodies and the idea that an object in motion tends to stay in motion set the stage for Newton’s laws of motion. X is also known for trying mathematics to physical measurements in a new way. Newton…
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