I came across this meter from Poodwaddle that keeps measurement of many of the biggest world trends. The Poodwaddle World Clock displays an amazing amount of information in an easy format (see screen shot below).
You can see births against deaths; what is killing people ranked by impact; how abortions map to births; ecological status in detail; energy sources by production levels; food production by type; the U.S.' economic performance; national crime statistics; etc.
I can't say how accurate the real time data is, but it was noted that it is approximate. It is a free app you can get for your smartphone or just go to the website to check it out.