ReasonINC

Reason; as the supreme authority in matters of opinion, belief, or conduct

Category: Population

“Humankind has become so much one family that we cannot ensure our own prosperity except by ensuring that of everyone else. If you wish to be happy yourself, you must resign yourself to seeing others also happy.” – Bertrand Russell

Wealth

A very clever article putting wealth in perspective.

(http://waitbutwhy.com/2014/03/combined-wealth-world.html)

How to be best understood

According to censuses from 2007, the most recent globally available data, the five most spoken languages, by native speakers, are as follows: Mandarin (935 million speakers); Spanish (387 million); English (365 million); Hindi (295 million); and Arabic (280 million).

The overall figures of how many people speak particular languages (including non-native speakers) are available from 2010 data: Mandarin (1151 million); English (1000 million); Spanish (500 million); Hindi (490 million); and Russian (277 million).