Evolution Quote by David Grinspoon

More and more, as civilization develops, we find the primitive to be essential to us. We root into the primitive as a tree roots…

— Charles Lindbergh

Most estimates of the mortality risk posed by asteroid impacts put it at about the same risk as flying in a commercial airliner. However,…

— Nathan Myhrvold

We have the capability - physically, technically - to protect the Earth from asteroid impacts. We are now able to very slightly and subtly…

— Rusty Schweickart

When you look at the origins and evolution of life on Earth, it's been severely affected by asteroid impacts through history.

— Rusty Schweickart

There's no accepted global policy on what to do about asteroid impacts.

— Rusty Schweickart

We can both prevent asteroid impacts and address climate change. It's not either-or.

— Rusty Schweickart

Without Jupiter cleaning out the early solar system, the Earth would be pock-marked with meteor collisions. We would suffer from asteroid impacts every day.…

— Michio Kaku

The planet Mars - crimson and bright, filling our telescopes with vague intimations of almost-familiar landforms - has long formed a celestial tabula rasa…

— David Grinspoon

Earth's biosphere gave birth to humans and our thoughts, which are now reshaping its planetary cycles. A planet with brains? Fancy that.

— David Grinspoon

I do comparative studies of climate evolution, and the interactions between planetary atmosphere and surfaces and their radiation environment, and try to understand the…

— David Grinspoon

Of course Pluto is a planet: It's massive enough to have its shape controlled by gravity rather than material strength, which is the hallmark…

— Alan Stern

There is no other person on the face of this planet that I would rather sit and talk to than my wife.

— Willie Aames