A discovery in Ethiopia revealed that lion-sized otters once roamed the planet -- just one one of several massive animal species that once existed on Earth.
Teddy Roosevelt was known as the "conservation president" due to his dedication to preserving natural landscapes. Here's why it was so important to him.
Many people would agree that America's national park system is one of the positive uses of the continent's abundant natural resources -- visitors or not.
People might think that scientific research largely takes place in a lab, but not long ago theories were tested in real time by theorists like Thor Heyerdahl.
Some people will tell you that there's such a thing as luck, and there's such a thing as coincidence, but 110 incidents all at once pushes the odds a bit.
If we're honest, many of the behaviors attributed to the domesticated house cat are a mystery to us humans, including what does and doesn't make them happy.
Earth as we know it today isn't locked in place, as the continents shift position ever so gradually, leading to supercontinents. What about the oceans?
There are lots of points in the day, the week, the year, when, frankly, a nap sounds pretty good -- maybe even hibernation. But how would you know when to wake?
The depths of the world's oceans hold many unsolved mysteries. Now, you can add one more: Who or what created the patterns of small holes on the ocean floor?
Over time, nature evolves -- if possible, plants and animals adapt to their environments in order to survive, sometimes overcoming overwhelming conditions.
Humans have any number of ways to measure the passage of life -- increments of time, whether seconds or years. Research indicates it isn't just us, either.
It's not unusual for fishermen to, say, exaggerate their accomplishments and near-misses, which makes one claim, confirmed by a geologist, even more impressive.
As time goes on and our understanding of climate change becomes more profound, it's clear that all of life on Earth is interconnected and interdependent.