Help Us Guide You Better
best online ias coaching in india

Download Pdf


Science & Technology

Credit: Marco Gallio, Marcus C. Stensmyr. https://news.northwestern.edu  

(Subscribe to Science For All, our weekly newsletter, where we aim to take the jargon out of science and put the fun in. Click here.)

Published in Current Biology

Catnip (Nepeta cataria), a garden herb known for its hallucinogenic effects on domestic cats, is also used to ward off insects, especially mosquitoes. A new study has now decoded how the plant does this. The researchers found that Catnip and its active ingredient Nepetalactone activates an irritant receptor called TRPA1.

Published in PNAS

Who were the original inhabitants of the picturesque Bahamas? When did they arrive? A detailed study of the fire and vegetation (of the last 3,000 years) showed that indigenous people called Lucayans arrival in the northern Bahamas at around 830 CE. “While people were present in Florida more than 14,000 years ago at the end of the last ice age, these people never crossed the Florida Straits to nearby Bahamian islands, only 80 to 105 km away...Meanwhile, the Caribbean islands were populated by people migrating from South American northward,” explains Peter van Hengstum, one of the authors in a release.

Published in Current Biology

To find a suitable partner, male frogs sit in one place and call loudly. But how does the female hear and select the male of her species among all the other background noise and overlapping calls of other frog species? Their lungs act as noise-canceling headphones says a new study. The lungs when inflated were found to reduce their eardrum's sensitivity to noise in a particular frequency range, making it easier to hear their mate’s calls.

Published in Science

Meet Gliese 486 b, a new exoplanet found orbiting the red dwarf star Gliese 486. The exoplanet is 2.81 Earth masses, 1.31 Earth radii and is a Super-Earth (exoplanet larger than Earth and smaller than Neptune). “The gravity is also 70% stronger than on Earth, making it harder to walk and jump. Someone who weighed 50 kg on Earth would feel like they weighed 85 kg on Gliese 486b, explains astronomer José Antonio Caballero in a release.

Published in Advanced Materials

A new resin membrane could soon help clean up beaches contaminated with oil spills. Named SAVER (superamphiphilic vitrimer epoxy resin) membranes, they can separate oil and water efficiently. The paper reports that it is similar to classical epoxy resins and “the blocked membrane can be easily recovered when contaminated...recycled, and re‐used.”

You have reached your limit for free articles this month.

Already have an account ? Sign in

Start your 14 days free trial. Sign Up

Find mobile-friendly version of articles from the day's newspaper in one easy-to-read list.

Enjoy reading as many articles as you wish without any limitations.

A select list of articles that match your interests and tastes.

Move smoothly between articles as our pages load instantly.

A one-stop-shop for seeing the latest updates, and managing your preferences.

We brief you on the latest and most important developments, three times a day.

*Our Digital Subscription plans do not currently include the e-paper, crossword and print.

Dear reader,

We have been keeping you up-to-date with information on the developments in India and the world that have a bearing on our health and wellbeing, our lives and livelihoods, during these difficult times. To enable wide dissemination of news that is in public interest, we have increased the number of articles that can be read free, and extended free trial periods. However, we have a request for those who can afford to subscribe: please do. As we fight disinformation and misinformation, and keep apace with the happenings, we need to commit greater resources to news gathering operations. We promise to deliver quality journalism that stays away from vested interest and political propaganda.

Dear subscriber,

Thank you!

Your support for our journalism is invaluable. It’s a support for truth and fairness in journalism. It has helped us keep apace with events and happenings.

The Hindu has always stood for journalism that is in the public interest. At this difficult time, it becomes even more important that we have access to information that has a bearing on our health and well-being, our lives, and livelihoods. As a subscriber, you are not only a beneficiary of our work but also its enabler.

We also reiterate here the promise that our team of reporters, copy editors, fact-checkers, designers, and photographers will deliver quality journalism that stays away from vested interest and political propaganda.

Suresh Nambath

Please enter a valid email address.

Subscribe to The Hindu now and get unlimited access.

Already have an account? Sign In

Start your 14 days free trial Sign Up

You can support quality journalism by turning off ad blocker or purchase a subscription for unlimited access to The Hindu.

© Zuccess App by crackIAS.com