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URBAN SPARROWS. “Subsequently, a gradual decline from 1945 to 1975 is followed by a rapid decline from about 1990/91 to 2001.” https://www.britishbirds.co.uk/wp-content/uploads/article_files/V96/V96_N09/V96_N09_P439_446_A004.pdf View in LinkedIn

URBAN REASONS. “A steep decline in the 1920s was caused by the replacement of the horse with the internal combustion engine and the consequent loss of food to House Sparrows, in the form of spillage from nosebags and undigested seed in horse droppings.” https://www.britishbirds.co.uk/wp-content/uploads/article_files/V96/V96_N09/V96_N09_P439_446_A004.pdf View in LinkedIn

Rook at this mess: French park trains crows to pick up litter https://www.theguardian.com/world/2018/aug/11/rook-at-this-mess-french-park-trains-crows-to-pick-up-litter?CMP=Share_iOSApp_Other View in LinkedIn

SO ENDS this vignette on the once common sparrow and its demise in numerous cultures. Between being human-dependent, and having a critical threshold for colony size, the sparrow collapse has suffered from these two factors. What is most dramatic is how such a common bird can collapse so quickly in so many places. It surely is a canary for mankind. View in LinkedIn

Caribbean island bans plastic and Styrofoam https://www.cnn.com/travel/article/dominica-plastic-ban/index.html View in LinkedIn

ENTROPY AND PATHOLOGY. “When molecular disorder occurs in dividing cells in vivo, post mitotics may also be affected and both may then reveal increasing vulnerability to pathology and subsequent death of the individual well before species maximum longevity is reached.” https://lnkd.in/esfPTAR View in LinkedIn

YOUTH YIELDS TO AGE. “The number of population doublings that a cell strain is capable of undergoing and that is determined by telomere length, may be the in vitro expression of maximum potential longevity. The hundreds of molecular disorders that herald the approaching loss of replicative capacity, and diminution of telomere length, are age changes.” https://lnkd.in/esfPTAR View in LinkedIn

CELLULAR ENTROPY. “Hundreds of biological changes occur in normal cells as they replicate in vitro resulting in increasing molecular disorder and loss of cell function.” https://lnkd.in/esfPTAR View in LinkedIn

THE REMNANT. “After reproductive maturity in animals that age, the level of remaining physiological reserve determines longevity. The reserve does not renew at the same rate that it incurs losses because mole- cular disorder increases at a rate greater than does capacity for repair. This increase in molecular disorder is aging which increases vulnerability to predation, accidents or disease.” https://lnkd.in/esfPTAR View in LinkedIn

INEVITABLE PROPERTY. “Even when cells divide symmetrically, unicellulars readily evolve a state of asymmetric, unequal distribution of cellular damage among daughter cells. However, as soon as such an asymmetry evolves, aging evolves. Thus, aging – despite remarkable variation in the duration of life among different species – might be a fundamental and inevitable property of cellular life.” http://www.nature.com/scitable/knowledge/library/the-evolution-of-aging-23651151 View in LinkedIn