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Covid 19 coronavirus: Virus variants likely evolved inside people with weak immune systems 17 Mar, 2021 01:28 AM 5 minutes to read Nurses and doctors tend to a patient in a Covid-19 Intensive Care Unit at the Curry Cabral hospital in Lisbon. Photo / AP New York Times By: Apoorva Mandavilli Growing evidence suggests that people with cancer and other conditions that challenge their immune systems may be incubators of mutant viruses. The version of the coronavirus that surfaced in Britain late last year was shocking for many reasons. It came just as vaccines had offered a glimpse of the end of the pandemic, threatening to dash those hopes. It was far more contagious than earlier variants, leading to a swift increase in hospitalisations. And perhaps most surprising to scientists: It had amassed a large constellation of mutations seemingly overnight. ....
CAMILO LOPEZ-AGUIRRE & LAURA A. B. WILSON, THE CONVERSATION 7 MARCH 2021 Scientists have found another piece in the puzzle of how echolocation evolved in bats, moving closer to solving a decades-long evolutionary mystery. All bats - apart from the fruit bats of the family Pteropodidae (also called flying foxes) - can echolocate by using high-pitched sounds to navigate at night.
Current Biology, has shown how the capability for sophisticated echolocation not only evolved multiple times in groups of bats, but also that it never evolved in fruit bats. The remarkable sounds of bats To navigate using echolocation, bats produce high-frequency calls in their larynx (voice box) and emit these through their nose or mouth. These calls, usually made at higher frequencies than humans can hear, echo off objects and bounce back. ....
MORTGAGE AND FINANCE LEADER: How the broking industry has evolved - and what s next for Aussie MORTGAGE AND FINANCE LEADER: How the broking industry has evolved - and what s next for Aussie By Robyn Tongol 04 March 2021 Mortgage and Finance Leader gives you a unique insight into the mindset of the most influential figures in Australia s $2.7 trillion mortgage industry. Join host Alex Whitlock as he invites his guests to open up on the biggest issues and opportunities facing the mortgage and finance industry. In this episode, Aussie CEO James Symond looks back at the origins of the Aussie brand and how it got to where it is today, considers the evolution of the brand and the broking industry as a whole. ....
John Williamson: Northland s no seat belt minority and Law of the Vital Few 3 Mar, 2021 04:00 PM 4 minutes to read Police at a seat belt compliance checkpoint. Northland s road toll last year was 27 dead and, of these, 10 were not restrained by a seat belt or child restraint. That s 40 per cent. Photo / File ON THE ROAD In 1896, an Italian economist developed the Pareto Principle. This states that 80 per cent of the consequences come from 20 per cent of the causes. Over the years this has evolved to the 80/20 rule, or the Law of the Vital Few. So, 80 per cent of the crime comes from 20 per cent of the criminals, 80 per cent of the accidents come from 20 per cent of the hazards, 80 per cent of your revenue comes from 20 per cent of your customers and so on. But in road safety, the ratio is much sharper. ....
Letters: Tourism, self-control, Steve Braunias, borders and conversion therapy 16 Feb, 2021 04:00 PM 8 minutes to read International tourism will never again be as it was, says Tourism Minister Stuart Nash. Photo / Supplied, File NZ Herald Lost tourism While Minister Stuart Nash s comments about the future of tourism in New Zealand may seem overly harsh, he is right in saying that tourism will not return to what it has been. Visitors from Australia will probably be about the same level but the conditions that made possible large numbers from further afield are unlikely to return. Many of these were young adventurers who could afford the ever-cheaper fares that competing airlines provided and there was little concern that they could get jobs back home when their trip had ended. ....