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Unit 157 Many Viruses 'Are Falling From the Sky,‘ Study Finds

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  iDic
Story
A new study has revealed astounding information about how some viruses manage to spread far and wide. An international team of researchers found an immense number of them gets swept up into Earth’s troposphere, travel across the sky for up to thousands of miles, and fall back down to the ground. One of the team’s members who hails from the University of British Columbia noted, “Everyday more than 800 million viruses are deposited per square meter above the planetary boundary layer ‒ that’s 25 viruses for each person in Canada.” He further commented, “Roughly twenty years ago, we began finding genetically similar viruses occurring in very different environments around the globe.” This preponderance of long residence viruses traveling the atmosphere likely explains why it’s quite conceivable to have a virus swept up into the atmosphere on one continent and deposited on another. The team also found that most viruses falling from the sky do so via rain and Saharan dust migrations and the majority of them originally become airborne through sea spray.
Questions
1. How many viruses are deposited above the planetary boundary layer on a daily basis?

2. When the viruses fall from the sky, how does that happen?

3. When the viruses become airborneairborne, how does that happen?

4. If you sneeze, the viruses from you could affect the people in Africa, Europe as well as America. How does that make you feel?






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