If humans disappeared from the Earth

So let’s say some intergalactic alien race, let’s call them Kanamits, came up with a special use for humans and took us all with them to their planet. What would happen to this third rock from the sun?

Well that’s depressing. If humans disappeared, the world would be a better place from nature’s perspective. It wouldn’t take that long: 500 years or so. And 500 years is nothing in the life of a 4.5 billion year old Earth. Hell, 500 years is nothing even if you’re deluded into believing the Earth is only 6,000 years old.

We need the Earth more than it needs us.

Let’s remember that.

What alien life forms are breathing on other planets

Here’s a handy chart from Compound Interest (Click to enlarge):

The-Atmospheric-Compositions-of-the-Solar-System

Don’t let Mercury fool you. It’s oxygen level may appear to be double that of Earth, but the Mercurian atmosphere is one trillionth that of the third rock from the Sun.

And the planet’s hotter than hell, depending on which side you’re on. Otherwise, it’s colder than hell, according to the folks at Cal Tech:

Since Mercury is the closest planet to the Sun, spins slowly, and does not have much of an atmosphere to trap heat, its temperature varies greatly. Mercury’s temperatures can go between -279 Fahrenheit (-173 Celsius) at night to 801 Fahrenheit (427 Celsius) during the day. (This is hot enough to melt lead!)