Astrophysics Quote by Neil deGrasse Tyson

“Even now, the photosynthetic bacteria in the oceans produce the oxygen in half the breaths you take, and they lock away an equal amount…

— Ed Yong

...the life of the planet began the long, slow process of modulating and regulating the physical conditions of the planet. The oxygen in today's…

— Lewis Thomas

Photosynthetic organisms in the sea yield most of the oxygen in the atmosphere, take up and store vast amounts of carbon dioxide, shape planetary…

— Sylvia Earle

“Oxygen flooded into the atmosphere as a pollutant, even a poison, until natural selection shaped living things to thrive on the stuff and, indeed,…

— Richard Dawkins

The concentration of atmospheric carbon dioxide has changed greatly since fossilized life began on Earth nearly 600 million years ago. In fact, there is…

— Greg Benson

“Life isn't just about taking in oxygen and giving out carbon dioxide.”

— Malala Yousafzai

I remember, as a boy of 17 years of age, this was a fascinating thing for me: how we human beings breathe out carbon…

— Percy Julian

We have an atmosphere that is roughly 21% oxygen. The rest of it is largely nitrogen. There's just enough carbon dioxide (CO2) to drive…

— Sylvia Earle

“Within the chemically rich liquid oceans, by a mechanism yet to be discovered, organic molecules transitioned to self-replicating life.”

— Neil deGrasse Tyson

“Thus, 99 percent of the Earth’s atmosphere is of biological origin. The sky is made by life.”

— Carl Sagan

The fundamental reason why carbon dioxide in the atmosphere is critically important to biology is that there is so little of it. A field…

— Freeman Dyson

“Since about 1850, twice as much atmospheric carbon dioxide has derived from farming practices as from the burning of fossil fuels (the roles crossed…

— Judith D. Schwartz