These past two years have given humans a taste of a truly global crisis; that of the CoVid (and variants) virus. National economies have suffered, local economies have suffered, families have suffered, students have suffered; it’s been a mess. Chapter 19 discusses some of the responses to such medical catastrophes; chapter 20 discusses population growth and decline by introducing Thomas Malthus, an 18th-century theologian who posited dire consequences for Earth if the population was not controlled.
Malthus theorized that there were three things that would ‘naturally’ keep the population in check. 
Identify these three influences and discuss whether you think Malthus could be correct? Are the Corona Virus and its variants some of the ‘checks’ he spoke of? Will the casualties that are guaranteed in the Russian attack on Ukraine have any significant impact?
You might find the following helpful, or at least informative/interesting:
Attached are two clips of the same movie (Based on Malthus theory): Inferno (Dan Brown author; Tom Hanks stars) Same author as DaVinci Code, Hanks plays the same character ( a symbologist–sociology job!)
Here is a link to a live global population count, sponsored by the UN.  
Green Screen (interesting for those into filmmaking)  If you can split-screen or have two monitors, play these together. See what the filmmakers added to the green screen.
Inferno Extended Scene – Zobrists Presentation
Duration: 2:34
User: n/a – Added: 2/26/17
The REAL Movie beginning
Inferno Opening Scene- Foot Chase Scene
Duration: 3:03
User: n/a – Added: 3/28/17

 For those of us who are not hard scientists, a slower explanation:

Sourcing Zobrist’s exponential growth ideas – a Look at the movie INFERNO and Bartlett’s beaker
Duration: 3:53
User: n/a – Added: 3/28/17

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