While aspects of the process can help you determine what chemicals are in the air, ambient air monitoring should also give you a clear picture of oxygen levels. One of the keys to effective ambient air monitoring is choosing the correct locations to analyze. In outdoor environments, it can be much more difficult to pinpoint danger zones, so it is crucial to select sites that will give you accurate readings on the areas as a whole.
Longest YouTube Video Ever Will Take You 23 Days To Watch. Jonathan Harchick has created and uploaded the longest YouTube video of all time, clocking in at 571 hours, 1 minute and 41 seconds. He says, I challenge anyone to try and make a longer video.. By Megan O'Neill.
Despacito has overtaken Wiz Khalifa's See you again as the most watched YouTube video of all time. Luis Fonsi's 2017 hit also soared past long term record holder Gangnam Style. Video sharing website YouTube is one of the most popular ways to listen to music and watch clips online. Created in 2005 by former PayPal employees, the site was bought by Google for $1.65 billion in 2006. The first video to reach 1 billion views online was Gangnam Style back in 2012. Since then, dozens of videos have surpassed a billion views, and a handful have hit the two billion mark. Here are the 10 most watched YouTube videos of all time, in ascending order: 10. 'Blank space' by Taylor Swift