There is a new edition of Operation World, the definitive prayer guide for every nation and people group on earth.
Here's a few interesting facts from the first twenty five pages.
The world's population nearly doubled between 1970 and 2010.
63.2% of the worlds Christians are in Africa, Asia, and Latin America.
About 10% of foreign missionaries work among Muslims, even though Muslims make up about 37% of all non-Christians in the world.
"The non-religious, or secular, bloc has shown the most massive growth in the past century, from a tiny 0.2% of the world's population in 1900. . . in 2010 representing 13.6% - mainly Europeans and Chinese.
The Indian sub-continent has the largest concentration and variety of least-reached peoples.
The proportion of Buddhists who have come to Christ is minute.
The total population of unreached people is 2.84 billion, or 41.1% of humanity.