Related topics: population · climate change

Study: To save nature, focus on populations, not species

Human-released greenhouse gases are causing the world to warm, and with that warming comes increasing stress for many of the planet's plants and animals. That stress is so great that many scientists believe we are currently ...

Should we build a nature reserve on Mars?

There are 8 billion of us now. The UN says when the population peaks around the year 2100, there'll be 11 billion human souls. Our population growth is colliding with the natural world on a greater scale than ever, and we're ...

Planet Earth: 8 billion humans and dwindling resources

Are eight billion humans too many for planet Earth? As we reach this milestone on November 15, most experts say the bigger problem is the overconsumption of resources by the wealthiest residents.

page 11 from 40