Importance of moving activities outdoors and ensuring proper ventilation indoors stressed, as experts urge science community to clarify definitions — ScienceDaily


Scientists affiliated with leading research institutions across the U.S. state in a letter published Monday in the journal Science that researchers across disciplines must converge to deliver clear public health guidance about how SARS-CoV-2 is spread in the air.

The researchers write in the open letter that the scientific community must clarify the terminology used related to aerosols and droplets, and employ a more modern size threshold, rather than the existing one based on 1930s-era work. Authors include experts from the University of California San Diego, University of Maryland, Virginia Tech, and others.

Public health officials should make a clear distinction between droplets ejected by coughing or sneezing — which have inspired the social distancing mantra of six feet of separation between people — and aerosols that can carry the virus for much greater distances. Viruses in aerosols smaller than 100 microns can remain airborne in a confined space for prolonged periods of time, and accumulate in poorly ventilated air, leading to transmission.

“The balance of attention must be shifted to protecting against airborne transmission,” said the group, led by Kimberly Prather, Director of the National Science Foundation-funded Center for Aerosol Impacts on Chemistry of the Environment based at Scripps Institution of Oceanography at UC San Diego.

“Viruses in aerosols can remain suspended in air for many seconds to hours, like smoke, and be inhaled,” according to the letter. “They are highly concentrated near an infected person, so they can infect people most easily in close proximity. But aerosols containing infectious virus can also travel more than [two meters] and accumulate in poorly ventilated indoor air, leading to superspreading events.”

In addition to mask wearing, social distancing and hygiene efforts, the researchers urge for public health officials to articulate the importance of moving activities outdoors, improving indoor air using ventilation

Feeling Stressed? Try Going Technology Free For a Day


“My technology-free day was a nightmare,” exclaims one student at the very beginning of her final presentation on technology, nature, and her inner experiences of both. This exclamation has amused me so much that I have repeated it often through the day when describing this project to other students and colleagues at Saint Francis University, a small university tucked into the hills of the Allegheny mountains in central Pennsylvania.

As part of the curriculum in my Environmental Sociology class, students are asked to journal on two different but related kinds of experiences: two technology-free days and 6 times in nature, in solitude without cell phones or iPods. Their reactions to these types of experiences are both startlingly profound and surprisingly life changing, but in actuality, life-enhancing. In this article, I will relate their experiences with technology-free days.

For this assignment, I have given them some instruction, but I have left it up to them how they want to define a technology-free “day.” Knowing how addicted most of my undergraduate students are to their cell phones, laptops with Face book, and iPods, I am loathe to tell them how long they should go without such supports. Some students really stretch themselves and define a day as an actually day- from sun-up until after dinner. Others can only go so far as to define one hour as their ‘day.’ I ask them to consider the following questions and write about them in their journals.

How does it feel to spend a day without technology? What effect does it have on your mood? Your mind? Your emotions? What differences do you notice between a technology day & a technology-free day? Similarities? What are some things you like about a technology-free day & why? What did you not like and why? How has being …

Feeling Stressed? Strive Going Technology Free For A Day


The know-how of food transport has been revolutionized on occasion. Technological development has vastly impacted within the lives of men within the current day in a good way. Technology might be boring to the typical person plus there’s a lot know-how obtainable on-line now that it is onerous for the reader to know what to click on on first.

There isn’t any more need for a battery of file-clerks to dig up data for him and carry the files around on carts, while again in the office the employee promises folks to get again in contact in a day or two when information about their accounts is dug up. No, he can present solutions instantly with blinding speed.

Using calculators, computers, the internet, and the entire instructing aids that at the moment are accessible for academics have vastly improved the standard of schooling in this generation. Additionally, some business house owners have hosted many websites on the net the place they inform individuals everywhere in the world of services and products they promote with out the buyers visiting the placement of the enterprise firm.

At present’s art lesson is again on positive and adverse area. Today, we agree that we are depending on know-how but yet most people typically feel uneasy about expertise. The use of the internet in schools has additionally allowed teachers to increase the workload of the scholars of at present’s era.

People sit with their computer systems and superior mobile phones and promote their businesses through this channel. The internet has helped many businessmen within the advertising and marketing of merchandise and promoting some helpful services to their clients. Within the 1900’s, many individuals didn’t dwell previous the age of 50, however people now dwell past 75 years because of the development in expertise that has …