The Global Footprint Network estimates that current activity uses resources twice as fast as they can be naturally replenished, and that growing human population and increased consumption pose the risk of resource depletion and a concomitant population crash. Evidence suggests birth rates may be rising in the 21st century in the developed world.Can we be sure the world's population will stop rising?, BBC News, October 13, 2012 Projections vary; researcher Hans Rosling has projected population growth to start to plateau around 11 billion, and then to slowly grow or possibly even shrink thereafter. A 2014 study published in Science asserts that the human population will grow to around 11 billion by 2100 and that growth will continue into the next century.
