If the means were available, we could trace our ancestry - yours and mine - back to the first blob of life-like material that came into being on the planet.
For nearly 2 million years, our ancestors survived and thrived and spread across the planet because they could run other mammals into heat exhaustion.
Until about 30,000 years ago, there were at least five other species of humans on the planet. Homo Sapiens, our ancestors, lived mainly in East Africa, and you had the Neanderthal in Europe, Homo Erectus in part of Asia, and so forth.
Once we have inexpensive energy, we can readily and inexpensively convert the vast amount of dirty and salinated water we have on the planet to usable water.
The one thing all humans share is that we all inhabit the same limited amount of real estate, which is Planet Earth.
Photosynthetic organisms in the sea yield most of the oxygen in the atmosphere, take up and store vast amounts of carbon dioxide, shape planetary chemistry, and hold the planet steady.
The connections between and among women are the most feared, the most problematic, and the most potentially transforming force on the planet.
I hereby accuse the North American empire of being the biggest menace to our planet.
Climate change poses an existential threat to the planet that is no less dire than that posed by North Korea's nuclear ambitions.
Ambition is to be the fastest runner on this planet, to be the first on the South Pole, which is a grotesque perversion of ambition. It's an ego trip, and I'm not on an ego trip. I don't have ambitions - I have a vision.
I have an enormous personal ambition. I want to shift the entire planet.
One of the most amazing things about my job is that I have arguably, maybe not even arguably - definitively - the best boss on the planet. Shonda Rhimes is the best.
The idea that we're somehow centrally important to the planet's existence is pretty comical - although I'd like us to be.
We have altered the physical, chemical and biological properties of the planet on a geological scale. We have left no part of the globe untouched.
Our planet has a peculiar wobble - its precession. And that precession produces upheavals in our weather, weather alterations we cycle through every 22,000, 41,000 and 100,000 years.
You can say, like, planet Earth has an existing geology, and what we do as human beings and as architects is that we try to sort of alter and modify and expand the geology.
I'm interested in how the bare bones of the planet, things that aren't alive, are transformed into things that are alive.
What I thought was fascinating about comparative religion was that these were the stories that humans have told themselves about where they come from, who they are and where they're going, and what it means to be alive on the planet.
The planet Mars - crimson and bright, filling our telescopes with vague intimations of almost-familiar landforms - has long formed a celestial tabula rasa on which we have inscribed our planetological theories, utopian fantasies, and fears of alien invasion or ecological ruin.
I always wanted to do a sci-fi movie, but most sci-fi scripts are either about saving the planet or fighting aliens.