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  • Throw away that antibacterial soap, no use fighting it anymore. Scientists have found

  • bacteria are perfectly happy living in the clouds!

  • Clouds are pretty, and it’s fun to imagine what the shapes are. That one's a dinosaur

  • holding a picnic basket! That one's a box with… a lid. And they're both filled to

  • the brim with bacteria! Bacteria are literally everywhere, on every surface of everything

  • all the time. I mean, it's pretty obvious that bacteria can live in the air down here,

  • but they're tiny after all and thus can be easily picked up by the wind. Full disclosure,

  • I never even thought about this, but bacteria have been found almost 25 miles up and all

  • OVER in the clouds! Scientists have found bacteria living above rainforests and deserts,

  • mountains and seas, even inside hail and snow!

  • Before you freak out, that's not actually a bad thing; they might help in cloud formation,

  • and can even live in lightning-prone storm clouds to encourage rain or hail. Researchers

  • have found as many organisms in parts of the sky as in an average river.

  • Clouds look pure and pretty, but on the microlevel they're teeming with bacteria, algae, fungi

  • and other tiny plants and animals. Microorganisms may see clouds as a giant transportation system,

  • growing and multiplying so the colony can populate a new area, quote "piggybacking on

  • the hydrological cycle," said one scientist.

  • But, a new study in Environmental Science and Technology has found bacteria are quite

  • happy to live in the upper atmosphere. They're not just looking to populate new areas alone!

  • They're okay with this crazy fly-by-the-seat-of-their-pants life!

  • This study was specifically done on a species of bacillus bacteria, in the Auvergne region

  • of France. Bacteria have been collected from the sky since the 1920s, so they probably

  • flew up and collected samples and brought them back to Earth for testing. But, somewhat

  • unexpectedly, the researchers found these cloud-borne microorganisms weren't dormant

  • and floating aimlessly, but were actively consuming saccharides, or sugars, which are

  • also found in that white puffy stuff! The sugars are blown there by the wind too; originating

  • from plants and microorganisms on the ground.

  • The bacteria use those sugars to sustain themselves, but more importantly as building blocks to

  • create polysaccharide armor which serves to protect the little guys. More research is

  • needed, but it appears the microbes have evolved to fight the stronger UV rays which reach

  • the clouds at high altitude; not to mention the sub zero temperatures. From there, they

  • multiply, help form clouds, and then rain, hail or snow back to Earth again. Amazing!

  • There's even bacteria on the Space Station guys. It's inescapable. Are you freaking out?

  • Bacteria everywhere!!! Or are you shrugging and living with the reality?

Throw away that antibacterial soap, no use fighting it anymore. Scientists have found


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B2 中高級

雲層中是否充滿了細菌? (Are Clouds Full Of Bacteria?)

  • 69 11
    Cheng-Hong Liu 發佈於 2021 年 01 月 14 日