The Landstonian Method of Methane-based Atmosphere Creation

Dinosaurs are smarter than you think. But, then again: what does science know? Numbers add up to nothing. Many people today think of humanity as some sort of logical conclusion to evolution. If dinosaurs weren't a logical conclusion to evolution, then I don't know what will be. Neither does anyone. Human perception of time doesn't even come close. The planet is still evolving. Other planets, galaxies and universes are evolving too. Mars is currently developing an atmosphere using a methane based technique devised by Brimmy Landstone.
Brimmy came from a small island in the middle of an ocean on Earth. When Brimmy was a child, a spaceship came falling out of the sky and landed in the water. They had come to the island and as one of the only people living on the island, Brimmy got to meet the astronauts. Brimmy was fascinated. She decided that she wanted to be an astronaut. So she asked them to take her for a ride in their flying boat. They didn't understand. Brimmy decided to just go to the flying boat. Maybe they would understand. When she got to the flying boat, the door was open so she went in. There were all sorts of knobs and gauges and things she'd never seen before. Brimmy thought for a second that the astronauts must be aliens. But then she figured that the rock covered in water must have more islands with more people and perhaps it was commonplace for flying boats full of people to fall out of the sky.
Brimmy still wanted to try the flying boat so she started pushing buttons. Suddenly, the door slammed and the boat began to whir. The ground began to shake so hard that the flying boat bounced into the air. Suddenly, an enormous volcano erupted straight out of the water and blew the flying boat into the air. The flying boat was going through the clouds, faster than it had ever gone before. Brimmy was rather uncomfortable with gravity flattening her against the rear wall of the vehicle.
Suddenly, Brimmy was floating around lighter than air. Brimmy was not previously aware of the existence of space. She figured that it was probably different beyond the clouds but eventually figured out that she couldn't jump that high. She certainly had no idea that things floated in space. Now she floated around inside what was a lot like a flying house. This was a puzzling situation to be in.
Suddenly, a box inside the front of the boat started speaking. Brimmy went to the front of the boat to look for the person who was speaking. "One of the astronauts is in there," she thought. "Speaking that astronaut language." Brimmy answered back in her own language. More astronaut language and no astronaut.
She finally decided that there was no one there and that this was an extraordinary talking box. It kept talking and she kept listening. Eventually, Brimmy started to pick up the language. She already had figured out that "astronaut" was the word for the people who had come to the island. Brimmy heard the phrase "Are you an astronaut?"
"No, I'm an astrologer." Brimmy thought it was funny. Astrologer means astronaut in her language.

But she was hungry. There was no food in the flying boat.

However, the flying boat was going faster than anyone knew, faster than anyone had gone before. The time-space continuum was wobbling and Brimmy started hallucinating. Suddenly, the flying boat smashed into a solid red surface. Brimmy was the first person to go to Mars but she didn't know it was Mars.
The flying boat was going so fast that it put a large hole in Mars. When the boat stopped moving it was well underground. The boat had cracked in half. There was an underground cave of sorts surrounding where the boat had stopped. Brimmy climbed out and relaized that she could see because the walls glowed with beautiful multicoloured mushrooms. There was a small stream running through the long narrow cave. She wasn't surprised to find an underground stream on Mars. She figured that Mars had water just like Earth.
Brimmy looked back at the ship to see that several cows were coming out of the large crack. the flight before her's had been doing research on cows in space. They began to graze on the mushrooms. Brimmy smiled and drank some water from the stream.
Many years passed as Brimmy and the cows explored the tunnels, grazing on mushrooms and drinking from the stream. the herd of cows grew . Thus, there was always methane in the air. Brimmy didn't know that methane was a greenhouse gas. she didn't even know that methane existed. Thus, Brimmy didn't realize that as they kept getting closer to the surface, the methane released by the cows had been causing an atmosphere to develop. In fact, when Brimmy first stepped out onto the surface of Mars, it was raining.
But, alas, this is the impossible story, the story science can't tell you. No one ever really knew taht Brimmy went to Mars. The Landstonian Method of Methane-based Atmosphere Development is virtually unknown.
When humans did arrive on Mars, many, many years later, they were surprised to find a fully functioning ecosystem dominated by talking cows. Cows don't usually speak because they don't have anything to say. These cows spoke to tell their story. Sadly, depsite the abundance of cows on Earth, humans don't speak cow. Thus, they didn't understand and are hunting down cows as alien invaders to this day