TIME Special Report: The World at 7 Billion

fstop / Alamy

This month, the 7 billionth person will be born on a planet already strapped for resources. To mark this extraordinary milestone, TIME explores the most pressing population issues of the day, from the quest for sustainable energy sources to a look at what our biggest cities could look like in the decades to come More »

The 10 Biggest Megacities of Today

From Tokyo to Manila, TIME takes a look at the largest cities worldwide More »
The 10 Fastest-Growing Cities of Tomorrow

From Lahore to Delhi, TIME takes a look at the cities projected to grow the most between now and 2025 More »
How the World Commutes

As the population rises, public transportation worldwide bears a heavier burden. A look at global commuters and the ways they get to work More »
Photos: People Watching

Inka Lindergard and Niclas Holmström capture the dynamic between humans and nature in their series, Watching Humans Watching More »
Crowded Planet

The environment will be the real victim of overpopulation More »
Q&A: Ban Ki-Moon

The U.N. Secretary-General talks about global population, the lingering threat of climate change and more More »
U.N. Reports Hope

Landmark report sees possibility, not peril, in population milestone More »
Declining Populations

Not all parts of the planet are sharing in the people boom More »