Archive for March, 2014

California’s Troubled Water Supply

March 21, 2014

California’s water supply issues are not new. As the population continues increasing, the water supply has been receding since the late 1990’s, with a recent and dramatic decline in the past few years.

Hours of Daylight Across the Year

March 20, 2014

This chart shows the amount of sunlight by latitude and time of year. Today’s equinox runs along the left-most blue line at 80 days. For American latitude reference, the Canadian-US border runs along the 49th Parallel and the California-Mexico border is at the 28th Parallel

–from Wikipedia

Household Income During Childhood Versus Adulthood

March 19, 2014

Artists tend to come from wealthier families than doctors, but not as wealthy as those producing lawyers and financial analysts.

–from NPR

Majority of Men’s Real Wages Down over Last Forty Years

March 17, 2014

For all men below the 70th income percentile, real wages have declined since 1973, with growing disparity towards the bottom of income distribution.

–from The New York Times

Earth’s Land Mammals by Weight

March 13, 2014

Humans are the dark-colored squares in the center, cattle form the large arc to the left, and all other animals are in small groups surrounding humans.

–from XKCD

Marginal Debt and Stock Market Performance

March 12, 2014

The marginal debt level, a “warning sign” of market stability, has been radically increasing along with the S&P 500. The current bull market, which has been on for 5 years, is among the longest in post-World War II America. Average bull markets last for 4.5 years.


Solar Time Often Very Different than Clock Time

March 11, 2014

This map shows the difference between solar time and clock time, with red indicating a later solar time. Much of the world is shaded red, with China having an especially stark situation, as the whole country is on one time zone. Click the image for a much larger view.

–from chartporn

Millennials Marrying Late, Politically Independent

March 10, 2014







Half of millennials consider themselves political independents and about a quarter of them marry are married by age 32. The marriage rates have been trending downward for generations and are less than half the silent generation.

–from Pew Social TrendsĀ 

College Tuition Increases Disproportionately Affects Poorer Families

March 5, 2014

The percentage of income spent on tuition has greatly increased for the poorest Americans, but has remained relatively stable for the wealthiest quintile.

–from The New York Times

Singapore has Highest Global Cost of Living, Paris is Second

March 4, 2014

The cost of living in Singapore has grown considerably in the past year making it the most expensive city in the world, followed by Paris, Oslo, and Zurich.

–from The Economist