billion-year

After all, you could have looked at Earth with a radio telescope for most of its 4-1/2 billion-year history, and failed to find any signals.

Seth Shostak: A Planet Someone Might Call Home Seth Shostak 2010

Indeed, in 1966, Carl Sagan and Boris Shklovskii suggested that technological civilizations will tend to either destroy themselves within a century of developing interstellar communicative capability or master their self-destructive tendencies and survive for billion-year timescales.

Jason Silva: The Imaginary Foundation Says "Great Art Expands the Way We See" Jason Silva 2011

I believe that it is in the waking up to the fact of your vast endowment from evolution of all the gifts in the 14 billion-year journey even if you are not quite sure what that purpose is.

Dr. Jean Houston: Abbondanza! Dr. Jean Houston 2011

After all, you could have looked at Earth with a radio telescope for most of its 4-1/2 billion-year history, and failed to find any signals.

Seth Shostak: A Planet Someone Might Call Home Seth Shostak 2010

Big History is the narrative account of the 13.7 billion-year history of our universe, the 4.5 billion-year evolution of our planet, the 7 million-year rise of our species, and the 10,000-year accelerating drama of human civilization.

William Grassie: Big History: Engaging the New Narrative of Science William Grassie 2012

We each carry the impulse of the evolutionary agenda; our minds are star gates, our bodies are celled of mysteries containing the memories of the past and the unfolding of the future; our spirits remain conscious that we are in the forefront of a 14 billion-year experiment that has resulted in your life.

Dr. Jean Houston: Abbondanza! Dr. Jean Houston 2011

We each carry the impulse of the evolutionary agenda; our minds are star gates, our bodies are celled of mysteries containing the memories of the past and the unfolding of the future; our spirits remain conscious that we are in the forefront of a 14 billion-year experiment that has resulted in your life.

Dr. Jean Houston: Abbondanza! Dr. Jean Houston 2011

We have learned a lot about how the universe came to be what it is now, but we know very little about why the 13.8-billion-year process played out in the entirely improbable way that it did.

First Contact Marc Kaufman 2011

I believe that it is in the waking up to the fact of your vast endowment from evolution of all the gifts in the 14 billion-year journey even if you are not quite sure what that purpose is.

Dr. Jean Houston: Abbondanza! Dr. Jean Houston 2011

Big History is the narrative account of the 13.7 billion-year history of our universe, the 4.5 billion-year evolution of our planet, the 7 million-year rise of our species, and the 10,000-year accelerating drama of human civilization.

William Grassie: Big History: Engaging the New Narrative of Science William Grassie 2012