Science & Technology Current Affairs - 2019
Science & Technology Current Affairs 2019-2020 category comprises current affairs with all important national / international updates in science and tech and events for the year 2019-2020 for UPSC, States, Civil services, SSC and other competitive examinations of India and States.
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A study in China has shown that Air pollution raises diabetes risk in China. The findings of the study were based on the data collected from over 88,000 people across 15 provinces, estimating their exposure to PM2.5 based on satellite data from 2004 to 2015.
The study was conducted by researchers from Fuwai Hospital in Beijing and Emory University in the US and was published online by journal Environment International.
Findings of the Study
- Long-term exposure to harmful smog particles increases the risk of diabetes, The study provides evidence for a link between the country’s air pollution and the disease.
- Increased prosperity has resulted in changing diets and lifestyles, along with an air pollution crisis that the World Health Organization estimates causes over a million premature deaths every year.
- The risk of diabetes rose by about 16 per cent for an increase of 10 microgrammes per cubic metre in long-term PM2.5 particle exposure.
- Similar studies in North America, Europe, Hong Kong and Taiwan have shown links between air pollution with diabetes.
Unites Nations study published in 2017 noted that China is facing the largest diabetes problem in the world with around 11 per cent of its population suffering from metabolic illness. It is expected that the sustained improvement of air quality will help decrease the diabetes epidemic in China.
Astronomers from Thiruvananthapuram and Mumbai have identified a new population of ultraviolet stars in the globular cluster NGC 2808 using the Indian multi-wavelength space observatory AstroSat, launched in September 2015.
AstroSat is India’s dedicated multi-wavelength space observatory which endeavours for a more detailed understanding of our universe. ASTROSAT observes the universe in the optical, Ultraviolet, low and high energy X-ray regions of the electromagnetic spectrum. Major astronomy Institutions and some Universities in India are participating in these observations.
Globular clusters are collections of thousands to millions of stars, moving as one unit. These stars are tightly held together by the gravity of the cluster itself and are believed to have formed together at roughly the same time. The globular cluster contains stars with a variety of masses but with similar chemical composition.
NGC 2808 is one of the massive globular clusters and is located at a distance of 47,000 light years from us.
Recent studies have shown that many globular clusters may well host more than one population of stars contrary to popular belief that all stars in such clusters are of the same age. Observations suggest that NGC2808 may have at least five different populations of stars.