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Researchers from the Harvard's Wyss Institute for Biologically Inspired Engineering have  created  a new gene-editing tool that can enable scientists to perform millions of genetic experiments simultaneously. They're calling it the Retron Library Recombineering (RLR) technique, and it uses segments of bacterial DNA called retrons that can produce fragments of single-stranded DNA.  When it comes to gene editing, CRISPR-Cas9 is probably the most well-known technique these days. It's been making waves in the science world in the past few years, giving researchers the tool they need to be able to easily alter DNA sequences. It's more accurate than previously used techniques, and it has a wide variety of  potential applications , including  life-saving treatments  for various illnesses.  owever, the tool has some major limitations. It could be difficult to deliver CRISPR-Cas9 materials in large numbers, which remains a problem for studies and experiments,...

Bill Gates Will Have to Wait a While to Block the Sun ·          A controversial,  Bill Gates-backed sun-blocking experiment  has been  postponed for ethical reasons . ·          Concerned groups want a clearer understanding of consequences before the launch. ·          The test was originally scheduled for June 2021, but will be delayed until at least 2022. Just as quickly as it was announced, a controversial  solar geoengineering experiment backed by Bill Gates  has been postponed until at least 2022. Gates and other private donors are supporting  Harvard University’s Solar Geoengineering Research Program , which had planned to launch a new study based in Sweden in June researching the efficacy of blocking sunlight from reaching Earth’s surface. The Stratospheric Controlled Perturbation Experiment ( SCoPEx ) aimed to see how ...

     CHENNAI: This year's Bhogi has been relatively cleaner with 13 out of total 15 monitoring stations recording lesser pollution levels than the previous year, claims the data released by Tamil Nadu Pollution Control Board (TNPCB). One monitoring station has been set-up in each of the 15 Chennai Corporation zones. The air quality survey was done for 24 hours on pre-Bhogi (January 10-11) and on Bhogi day (January 12-13). Based on the data, it was observed that gaseous pollutants - Sulphur Dioxide (SO2) and Nitrogen Dioxide (NO2) at all 15 stations are found to be well within the prescribed standards of 80 ug/m3 (micrograms per cubic meter), while the particulate matter (PM 2.5) level was in the range of 52-102 ug/m3 as against the prescribed standards of 60 ug/m3 and PM 10 was in the range of 103-256 ug/m3 as against the prescribed limit of 100 ug/m3. Surprisingly, the cleanest air was recorded in Royapuram where the Air Quality Index (AQI) was 113, an impr...

Earth's orbit has become so crowded with defunct satellites and debris that scientists worry about accidental collisions affecting new space missions. Governments and startups are now working on ways to try and fix this great mess.   The year was 1957. The Soviet Union had just launched the world’s first man-made satellite, Sputnik-1, in October, marking the beginning of the “space age”. Sputnik-1 ran out of battery power in roughly 21 days but kept orbiting Earth for three months. In January 1958, the sphere-shaped satellite finally fell back into Earth’s atmosphere, burning up during re-entry. But this isn’t the case with all man-made satellites and objects that have been put in space since then. Sputnik-1 kicked off what has come to be known as the “space race”. Since 1957, countries around the world have launched over 6,000 rockets, which have placed around 10,680 satellites in orbit, according to the European Space Agency’s (ESA’s) Space Debris Office...