Readers discuss a guest essay about birthrates and the world’s population. Also: A citizens’ celebration for America’s 250th ...

Politics aside, it is demographics that are driving the numbers for Social Security, and they will not change anytime soon.

We’ve all heard that human overpopulation is a crisis. In 2017, Bill Nye warned us about the planet’s “people problem,” and ...

It’s time for everyone to engage in the depopulation debate, says Dean Spears, a co-author of After the Spike.

In their new book After the Spike, demographers Dean Spears and Michael Geruso make the counterintuitive case for worrying ...

The telecommunications revolution transformed our world and lived experience in ways so profound it was difficult to imagine ...

Inspired by a mountain lion isolated from potential mates, the world's largest wildlife bridge is being built in Los Angeles ...

A study puts the spotlight on Texas as the leading U.S. state by far for flood-related deaths, with more than 1,000 of them ...

This Nordic country has one of the highest rates of people living alone, and this can be dangerous in the face of major ...

Kabul could become the first modern city to run out of water by 2030, according to a report published by the nonprofit Mercy ...

Gregory is taking the risk because it’s the best way to see the ocean’s celebrity predators behaving naturally as they hunt ...

Birth rates are tumbling across the world. This isn’t just a tragedy for the growing number of women who have fewer children ...