Cities Will Feel Brunt as Global Population Passes 7 Billion October 19, 2011 Cities Will Feel Brunt as Global Population Passes 7 Billion By the Editor on October 19, 2011 in Around_the_Web To Joel Cohen, a professor of populations at Columbia, whether the Earth will be able to sustain 7 billion humans, 9 billion or 10 billion will “depend on choices we and future generations make.” Share this:TwitterFacebookEmailLinkedIn Tags:BIG Problems, Population, Resources, Survival & Reproduction Share this article: 0