Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of organisms of ...

Sign up for the On Point newsletter here. It took 300,000 years for the human population to grow to one billion souls. We hit that milestone in the early 1800s. And ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: While most estimates place the ...

As the human population increases and we build more and more infrastructure across the planet, there will be increasing overlap between humans and animals in the next 50 years. About 57 percent of all ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. A team of scientists from the United States, Italy, and China may ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Fossilized bone ...