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Population Pyramids

Today we discussed population pyramids, a way to measure population while taking aspects like age and gender into consideration. In a population pyramid, men are on the left, women are on the right, the youngest are on the bottom and the oldest are on the top. The ages are separated into 5-year increments and grouped into pre-reproductive (0-14), reproductive (15-44) and post-reproductive (45-100+). We can predict future population trends by looking at the base of the pyramid. A large base points toward population increase, and a small base points toward a population decrease. Pre-industrialized countries tend to have larger populations because of the lack of availability of birth control, while developed countries tend to have steady population numbers or population decrease as people put off having children for later years or simply never have children. Pre-industrialized countries also usually don't have highways, great schools, or airports. This is because most of the state...
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Life Expectancy

In class, we discussed life expectancy in different nations. We learnt that Monaco, a very wealthy island, has the highest life expectancy in the world. This is probably due to rich people being able to afford medicine and treatments for sickness, and are less prone to sickness in the first place because of their being able to afford clean conditions. The USA was around #45, which makes sense. Countries in war and with poor infrastructure, like Chad, were near the bottom. We also explored how women almost always have a higher life expectancy compared to men, which could be due to more men in the military, and more men doing dangerous jobs. This is most likely due to women getting turned down for more 'masculine' and therefore dangerous jobs, such as labor. Gender roles seem to take a role in this, because if men weren't taught that dangerous jobs were manly, and if women weren't taught that they were too fragile and weak to do anything dangerous, these numbers would pr...
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Hans Rosling: 200 Years in 4 Minutes.

In class, we watched a video by Swedish global health teacher Hans Rosling. Rosling used visualization to show the difference by nation in life expectancy and GDP per capita between 1810 and 2009, when the video was made. In 1810, life expectancy was below age 40 worldwide, and GDP per capita was below $400 worldwide, but this didn't take inflation into consideration. As time progressed, western, particularly European, nations had a significant increase in GDP per capita because of the industrial revolution. The better economies led to better healthcare, and longer lifespans in these nations. Meanwhile, colonized countries in Asia and Africa were doing poorly both in life expectancy and GDP per capita because they were not impacted by the industrial revolution. In the video, we saw how WWI and the Spanish Flu epidemic impacted the world's population as nations all over the world had great decreases in the life expectancy. Seeing these countries recover and come back stronge...
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