Why We Have A Blue Sky

"Today, Earth is enveloped by a thin veil of gas, a narrow band of atmosphere that protects a world covered in lush green vegetation, deep blue oceans, and abundant life. But 4.5 billion years ago, Earth was a very different place: a hellscape of molten lava and barren rock, under relentless bombardment from meteors, and with no atmosphere whatsoever. So how did our familiar blue sky come to be? Breathtakingly realistic animations and a chorus of science experts reveal how the primordial inferno first gave rise to an orange-hued cauldron of toxic gasses that would be deadly to us today. Witness how the first drops of rain splashed down on the searing planet, setting the stage for the evolution of life. And discover how life itself helped create the air we all breathe today."

Click on the link below to better understand the natural history of our planet and how it set the stage for life and its wide variety today:

Ancient Earth: Birth of the Sky

Knowledge Of The Origin Of Life On Earth Continues To Expand

"What do we know about the origins of life? From the formation of the solar system to microbes evolving into bipedal mammals with opposable thumbs, today we will look over the four major theories about how life began."

Click on the link below for a video by Sabine Hossenfelder presenting the current state of our knowledge about the origins of life on Earth. Take that, "God of the Gaps" apologists:

Life might be more common in the universe than we thought

Origins And Anthropology

There probably isn't a normal human being who hasn't ask, "Where did we come from?" The following videos do an excellent job of explaining the probable history of how all life and humans began, and the history of human biological and cultural evolution. Oh, if you ask "Why?", that is a philosophical or religious question for which NO answer is justified no matter how intently apologists try to do so.

Where did life come from?

What was the ancestor of everything?

Why are we the only humans left?

Are we all related?

The Two People We're All Related To

From the fall of Dinos to the Rise of Humans

The Humans That Lived Before Us

When We First Walked

When humans were prey

When We Tamed Fire

When We Met Other Human Species

When we took over the world

Ya, The Earth Is "Special"

This discovery is significant, as at least another planet in our solar system has the building blocks for life. Indeed, life may have been there and/or is still there underground.

Life on Mars?

(JPL - NASA)

Origin Of Life On Earth

Another piece in the puzzle of how life may have originated on Earth is found.

Ingredients regarded as crucial for the origin of life on Earth have been discovered at the comet that ESA’s Rosetta spacecraft has been probing for almost two years.

Closer To Understanding The Origin Of Life?

"The molecular dance that led to the origin of life billions of years ago remains one of the deepest mysteries in modern science. Though the exact choreography is forever lost to time, scientists now say they may have identified one of the key steps."

‘RNA world’ inches closer to explaining origins of life

"Two researchers at the famous Szostak Lab at Harvard University describe their respective contributions to scientific understanding of the emergence of life. Two essentials of life are (a) self-replication and (b) a membrane. Dr. Matthew W. Powner, a Research Fellow at the Szostak Lab, explains the breakthrough he and his colleagues made in the reconstruction of the origin of nucleotides, the basic material of self-replication. Itay Budin, a doctoral candidate in the Szostak Lab, explains the acclaimed model he devised for the development of lipid membranes on the early Earth. Both projects provide clues to the origins of the earliest stages of life."

Groundbreaking Research on the Origins of Life

Some other links supporting the probability that life came from chemistry. No God is necessary:

https://www.amazon.com/What-Life-Chemistry-Becomes-Landmark-ebook/dp/B008RYSKKS

https://www.youtube.com/watch?v=mrAi83YNWq0&feature=share

The Beginning Of Life?

This article presents a very plausible hypothesis for the origins of life on Earth.  I just wish that science writers would stop using the term "theory" inappropriately.

http://www.salon.com/2015/01/03/god_is_on_the_ropes_the_brilliant_new_science_that_has_creationists_and_the_christian_right_terrified/