Parts per Million: A Little is a LOT (In the Greenhouse #18)

The current concentration of carbon dioxide in Earth’s atmosphere is 415 parts per million. Is that a lot or a little? What is a “part per million,” and what impact does a trace gas – or any trace component in the environment – have on the system as a whole?

In this video we’ll explore a variety of trace elements with our five senses; sight, sound, small, taste, and touch. We compare percent (parts per hundred) with parts per million and parts per billion, and look at the profound impact that trace components have, all around us, every day.

#CarbonDioxide #TraceGas #ppm #ppb #SentinalSpecies #DrinkingWater #ClimateChange #ClimateSolutions #ClimateActionNow #NGSS #IPCC #CarbonNeutral #ruby #sapphire #diamond

Images in this video:
https://commons.wikimedia.org/wiki/Fi...
https://earthobservatory.nasa.gov/ima...

Flint MI water crisis summary, NRDC, https://www.nrdc.org/stories/flint-wa...

Music in this video illustrates the use of a distinctive instrument to create an iconic sound. Μέμης Ροσελάτος of the band Πένα Τρίλια plays Greek bouzouki throughout the film, and a clip of Black Swan by BTS opens the video with the sound of a Korean gayageum.
Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

Peppermint Ice Cream Recipe (after David Lebovitz)
1 cup (250ml) whole milk
1 cup (200g) sugar
pinch of salt
5 large egg yolks
2 1/4 cups (560ml) heavy cream
2 1/2 teaspoons peppermint extract
Heat milk, salt and sugar in a saucepan. Beat egg yolks in a separate bowl, and add a little warm milk to the yolks while stirring. Return the yolk/milk mix to the saucepan. Cook on low heat, stirring constantly, until custard thickens. Remove from heat and slowly add cream while stirring. Add peppermint extract, stir, and refrigerate overnight. Freeze in an ice cream maker, adding crushed peppermint if desired, as the ice cream thickens. Enjoy!

Additional Resources:
The Teacher-Friendly Guide™ to Climate Change: https://www.priweb.org/science-educat...
Earth@Home: https://earthathome.org
In the Greenhouse Playlist:    • In the Greenhouse: Exploring Climate ...  

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