Life expectancy typically refers to the average lifespan of a person at birth. It’s often calculated for specific subgroups of people, e.g., nationalities, sex, wealth, etc. Using a combination of recorded and archeological data it can even be estimated for historical periods. Important Factors Infant and child mortality are the… Read more“Map Monday, Life Expectancy through History”
Category: Science
Map Monday, When Can You Expect the Coldest Day of the Year?
On average what’s the coldest day of the year? In the northern hemisphere, winter begins on the winter solstice, which is the shortest day of the year. Actually, it’s not the shortest day, but rather the day where the sun is above the horizon for the fewest hours. FWIW, this… Read more“Map Monday, When Can You Expect the Coldest Day of the Year?”
Map Monday, Natural Range of Budgerigar Parakeets
Budgerigar parakeets or ‘budgies’ as they’re often called are the most common pet bird in Europe and North America. In fact, they may well be the most popular pet after dogs and cats. Oddly, they achieved this status relatively quickly. While humans have kept pet birds for thousands of years,… Read more“Map Monday, Natural Range of Budgerigar Parakeets”
