I also have many questions myself that I couldn't answer... All I know is that the US government/elites and its allies have been actively trying to depopulate, using various methods. Bill Gates, for example, even publicly promoted the depopulation agenda, and he's a big investor in vaccines, Monsanto, and chemtrails.

Recently, the most blatant attack by those government is the "Zika virus" insecticide spray in Florida, South Carolina, etc. When you can openly spray insecticide on the general public, I have no reason to doubt these shocking "2025 population forecast." (Unless of course, the citizens of most countries wake up and start a revolution to overthrow the Illuminati governments.)