Query: Westworld's first season premiered on October 2, 2016, to 10 billion viewers.

Relevant passages:
Westworld (TV series) <=SEP=> Westworld is an American science fiction western thriller television series created by Jonathan Nolan and Lisa Joy for HBO . It is based on the 1973 film of the same name , which was written and directed by American novelist Michael Crichton , and to a lesser extent on the 1976 sequel Futureworld . It is the second TV series based on the two films , the first being the short-lived 1980 series Beyond Westworld . Nolan and Joy serve as executive producers along with J. J. Abrams , Jerry Weintraub , and Bryan Burk , with Nolan directing the pilot . The first season premiered on October 2 , 2016 , concluded on December 4 , 2016 , and consists of ten episodes . In November 2016 , HBO renewed the show for a 10-episode second season , planned for a 2018 debut .   The story takes place in the fictional Westworld , a technologically advanced Wild West -- themed amusement park populated by android hosts . Westworld caters to high-paying guests , who may indulge in whatever they wish within the park , without fear of retaliation from the hosts .   The series ' debut on HBO garnered the network 's highest viewership ratings for a premiere since the first episode of True Detective in 2014 and Westworld ranks as the most-watched first season of an HBO original series ever . Westworld has received positive reviews by critics , with particular praise for the visuals , story , and acting .

World population <=SEP=> In demographics , the world population is the total number of humans currently living . The world population was estimated to have reached 7,500,000,000 at 16:21 ( UTC ) on April 24 , 2017 . The United Nations estimates it will further increase to 11.2 billion in the year 2100 .   World population has experienced continuous growth since the end of the Great Famine of 1315 -- 17 and the Black Death in 1350 , when it was near 370 million . The highest population growth rates -- global population increases above 1.8 % per year -- occurred between 1955-1975 peaking to 2.06 % between 1965-1970 . The growth rate has declined to 1.18 % between 2010-2015 and is projected to decline to 0.13 % by the year 2100 . Total annual births were highest in the late 1980s at about 139 million , and are now expected to remain essentially constant at their 2011 level of 135 million , while deaths number 56 million per year and are expected to increase to 80 million per year by 2040 . World population reached 7 billion on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau .   The median age of the world 's population was estimated to be 30.1 years in 2016 , with the male median age estimated to be 29.4 years and female , 30.9 years .   The 2012 UN projections show a continued increase in population in the near future with a steady decline in population growth rate ; the global population is expected to reach between 8.3 and 10.9 billion by 2050 . 2003 UN Population Division population projections for the year 2150 range between 3.2 and 24.8 billion . One of many independent mathematical models supports the lower estimate , while a 2014 estimate forecasts between 9.3 and 12.6 billion in 2100 , and continued growth thereafter . Some analysts have questioned the sustainability of further world population growth , highlighting the growing pressures on the environment , global food supplies , and energy resources .   Estimates on the total number of humans who have ever lived range in the order of 106 to 108 billion .