मंगल ग्रह पर स्थित घाटियों के जाल से प्राप्त नए प्रमाण इस बात की पुष्टि करते हैं कि लगभग चार अरब वर्ष पहले नोआकियन काल में उष्ण और आर्द्र जलवायु धीरे-धीरे परिवर्तित होकर लगभग तीन अरब वर्ष पहले हेस्पेरियन काल तक ठंडी और हिममय हो गई थी।
ಭೂಮಿಯ ಮೇಲೆ ಪರಮಾಣು ಶಸ್ತ್ರಾಸ್ತ್ರಗಳ ದುರ್ಬಳಕೆ ಅತ್ಯಂತ ವಿನಾಶಕಾರಿಯಾಗಿದ್ದು ಅವುಗಳು ಸ್ಫೋಟಗೊಂಡ ಸ್ಥಳದ ಸುತ್ತಮುತ್ತ 3 ಕಿಲೊಮೀಟರ್ ವ್ಯಾಪ್ತಿಯೊಳಗಿರುವ ಎಲ್ಲವನ್ನೂ ಸುಟ್ಟು ಭಸ್ಮ ಮಾಡುವಂತ ಶಕ್ತಿಯನ್ನು ಹೊಂದಿವೆ.
अध्ययन से पता चलता है कि नौकरशाही और राजनैतिक हित, वन अधिकार अधिनियम के क्रियान्वयन में बाधा डालते हैं।
According to the National Tiger Estimation survey, the number of tigers has surged to 2967, indicating a doubling of tiger numbers since the first survey conducted in 2006 under a revised monitoring methodology. Although this change may sound exciting to the layperson, some scientists have flagged concerns about accepting these claimed changes in tiger numbers. In a recent study, published in the journal Conservation Science and Practice, researchers from India and Norway refer to important mathematical, statistical and ecological principles and highlight how India’s tiger survey results deviate from these principles.
In the 18th and 19th century, Britain was abuzz with cranking steam engines, rattling power looms, and clattering machines. Amidst this daily ding, the world was witnessing a defining movement in human history—the Industrial Revolution—that soon spread to the rest of Western Europe. Powered by coal, the production of most things transitioned from hand to machine, spurring a rise in population and air pollution. For the next two centuries, London became infamous for its soot and smog, which turned fatal for about 12,000 people. Now, a new study has shown that this mal air has left its trace in the lofty Himalayan glaciers, thousands of kilometres away from Europe.
शोधकर्ताओं ने टिकाऊ, कम शक्ति की खपत वाले ग्राफीन ट्रांजिस्टर बनाने के लिए एक नवीन तकनीक की खोज की है
“ஊர்முது வேலிப் பார்நடை வெருகின்
இருட்பகை வெரீஇய நாகுஇளம் பேடை
உயிர்நடுக் குற்றுப் புலாவிட் டரற்ற…”
-326- பருத்திப் பெண்டின் சிறு தீ!
Researchers find familial dissimilarities in proteins from two species of Mycobacterium.
In a new study, an international team of researchers have found that large dams have heavily fragmented fish population across the world. Published in the Proceedings of the National Academy of Sciences, the study assessed about ten thousand species of fish worldwide affected by around 40,000 existing dams and 3,700 upcoming dams worldwide. The findings reveal that fish habitats are most disconnected in the United States, Europe, South Africa, India, and China. The proposed dams are poised to further worsen fish habitat connectivity in tropical watersheds like the Amazon, Congo, Mekong and Salween.
Study details how floating plastic debris can affect physical processes in the oceans