There's no way we could take cars off the planet and not have our society fall apart. So they're a necessary evil, in that sense.
A time will come when men will stretch out their eyes. They should see planets like our Earth.
Our planet is not fragile at its own timescale and we, pitiful latecomers in the last microsecond of our planetary year, are stewards of nothing in the long run.
Quite honestly, if we do manage to destroy the planet with our devil-may-care attitude to natural resources, I'd suggest we leave, as a dossier in our defence, the collected letters to agony aunts and uncles down the generations. It would certainly p...
History is what we write, not what we remember. Why should we tarnish the memory of our planet by enshrining our less then noble deeds?
So there are countless reasons to remain on this Godforsaken planet that was long considered the only world, if for no other reason than to learn the end of our story: what the author of our lives has not yet taken the trouble to finish.
Each generation has its own rendezvous with the land, for despite our fee titles and claims of ownership, we are all brief tenants on this planet. By choice, or by default, we will carve out a land legacy for our heirs.
Posterity is the world to come; the world for whom we hold our ideals, from whom we have borrowed our planet, and to whom we bear sacred responsibility. We must do what America does best: offer more opportunity to all and demand responsibility from a...
I think having toured the world and seeing many places, I've just been blown away by how we've really scarred our home. I'm as guilty as the next person if not more so. I travel a lot. The damage we do to our planet is huge.
The first arrival of earthly life on another celestial body ranks as an epochal event not only for our generation, but in the history of our planet. Neil Armstrong was at the cusp of the Apollo programme. This was a collective technological effort of...
Mars, we know, was once wet and warm. Was it home to life? And what can living and learning to work on its rust-colored surface teach us about the future of our own planet, Earth? Answering those mysteries may hold the key to our future.
Evolution isn't just a story about where we came from. It's an epic at the center of life itself. Far from robbing our lives of meaning, it instills an appreciation for the beautiful, enduring, and ultimately triumphant fabric of life that covers our...
We're looking at Earth science, observing our planet. Also space science, looking at the ozone in the atmosphere around our Earth. Also looking at life science. And on a human level, using ourselves as test subjects.
Human activity is having a major impact on the planet. We consume or have diverted a large proportion of the productivity of the land and oceans. Our hunger for land crowds out fellow species. Our waste products pollute the waters, warm the atmospher...
This is the moment when we must come together to save this planet. Let us resolve that we will not leave our children a world where the oceans rise and famine spreads and terrible storms devastate our lands.
I believe that the more time we spend choosing to run the deep inner-peace circuitry of our right hemispheres, the more peace we will project into the world, and the more peaceful our planet will be.
Let me mention that not all sun-like stars host planets - perhaps about 30% of them are planet-builders. It's not so easy to form a planet!
Planting trees, I myself thought for a long time, was a feel-good thing, a nice but feeble response to our litany of modern-day environmental problems. In the last few years, though, as I have read many dozens of articles and books and interviewed sc...
An evolutionary perspective of our place in the history of the earth reminds us that Homo sapiens sapiens has occupied the planet for the tiniest fraction of that planet's four and a half thousand million years of existence. In many ways we are a bio...
I am not on this planet to get something done - the things we accomplish are expressions of our purpose.
I am optimistic globally. So many scientists are working frantically on the reparation of our planet.
