Whether we are poor among the poorest, or less poor among the wealthier, let us stand proud and noteworthy, united and strong, comforted by our belonging to the Community of the Free Nations of our Planet.

If an alien visited Earth, they would take some note of humans, but probably spend most of their time trying to understand the dominant form of life on our planet - microorganisms like bacteria and viruses.

Many can argue that it is our power of intelligence that is the key to the human domination of our planet. I suggest that it is the ability to put our thoughts into words that can be communicated to others.

The attempts to command the climate and decide about the temperature on our planet are wrong and arrogant. I wrote a book about it which was published in English under the title 'Blue Planet in Green Shackles.'

We have people being a little uncomfortable in their life on Earth with finances and so on, so Science Fantasy or Science Fiction allows people to think that there are possibilities beyond the gravity of our planet.

It was once religion which told us that we are all sinners because of original sin. It is now the ecology of our planet which pronounces us all to be sinners because of the excessive exploits of human inventiveness.

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.

Our planet is dying. Whales will be extinct before we ever get to know them. They say these creatures are so intelligent. They may disappear from the face of the Earth before we know them, and that is a great tragedy.

Does this planet have enough resources so seven or eight billion can have the same level of consumption and waste that today is seen in rich societies? It is this level of hyper-consumption that is harming our planet.

I've visited Lincoln Park Zoo more times than I can count because I believe the more the public learns about our animals, plants and environment, the better equipped we are to play a leading role in protecting our planet.

I hope for all of us that the future brings us towards evolving our consciousness. To delving deeper into our true power. To exploring more the key to sustaining our planet and our art for the better of all living things.

The light from the sun breaks through space, bathing our planet as it encircles the sun with life-giving warmth and light. Without the sun, there could be no life on this planet; it would be forever barren, cold, and dark.

Strong, enforceable environmental protections will not only help protect our planet for future generations, it will also level the playing field for small-and-medium-sized U.S. businesses by raising environmental standards.

Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark.

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.

Through consciousness, our minds have the power to change our planet and ourselves. It is time we heed the wisdom of the ancient indigenous people and channel our consciousness and spirit to tend the garden and not destroy it.

You get this overview effect where you realize how small we are and how fragile our planet is and how we're really all in it together. You don't see borders from space, you don't see diversity and differences in people on Earth.

We must stop trying to protect our planet from every imaginable, exaggerated or imaginary risk. And we must stop trying to protect it on the backs, and the graves, of the nation's and world's most powerless and impoverished people.

By using our renewable resources, energy can be generated in a carbon-responsible, cost-effective manner that also creates jobs and mitigates climate change, providing a workable and affordable solution that will keep our planet healthy.

It is fantastic to think that one day we may be able to access fuel, materials and even water in space instead of digging deeper and deeper into our planet for what we need and then dragging it all up into orbit, against Earth's gravity.

Even as our unwitting alterations to Earth's carbon and hydrological cycles slowly make storms more damaging, our ability to monitor our planet from space and make reliable short-term forecasts have equipped us enormously to withstand them.

'Being green' is commendable, but I hope that people don't take too much pride and self-adoration because they shut off the water when they brushed their teeth. The truth of the matter is, conservation alone will do little to save our planet.

Almost a quarter of our planet is a single mountain range and we didn't enter it until after Neil Armstrong and Buzz Aldrin went to the moon. So we went to the moon, played golf up there, before we went to the largest feature on our own planet.

Shelters, conservationists, those concerned about unnecessary cruelty toward the animals we eat, and people working against species extinction fight to preserve the true riches of our planet, our real inheritance. These are big, critical goals.

For the continued survival of our planet and humanity, it is crucial that certain discoveries and skills and inventions made by people over the years be passed on from one human generation to the next, from one person, face-to-face, to another.

Our country deserves a party that isn't afraid to say immigration is a good thing, or to say that Donald Trump is racist, or to admit that we have an economic system that is fundamentally broken for too many people and is breaking our planet too.

Thanks to the fact that the Earth isn't a perfect sphere, and invoking a bunch of Newtonian physics, you can deduce that our planet wobbles, too, taking roughly 26,000 years to trace out a small circle on the sky, a phenomenon known as precession.

Poverty must be eradicated, the resources of our planet used sustainably, human rights respected, equality between men and women strengthened, HIV/AIDS and other diseases prevented, terrorism stopped, and disarmament and non-proliferation secured.

We can't continue to take from our planet the way we do and not give anything back, and the idea of, 'Oh, but it's fine, I won't have to deal with it in my lifetime,' well, you need to think about the future generations who will have to deal with it.

If you're sending a message to extraterrestrials, what you want to send is what's special about us and our planet - what is unusual. Now, that's not basic chemistry or mineralogy; it's pretty much the cultural stuff and the consequences of evolution.

People should decide 'are you willing to spend all this money to go to Mars?' I think the average person on the ground would never spend that amount of money - they have to spend it on something that makes sense and this is definitely saving our planet.

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 all.

I absolutely believe that we are on the cusp of not just a technological revolution, but a productivity revolution. It will bring benefits for people everywhere, make our planet more sustainable, and provide new opportunities for businesses of all kinds.

You might have heard about a transformation that can occur when someone first sees Earth from space - how it becomes harder to think about 'my country' or 'my people' and harder not to think about 'our planet.' I can tell you, that transformation is real.

Most people know that forests are the lungs of our planet, literally playing a critical role in every breath we take. And that they're also home to incredible animals like the orangutan and elephant, which will go extinct if we keep cutting down their forests.

Standing on the apex of our planet is humbling. I'm starved of oxygen, depleted of reserves, unable to eat, and bound by anxiety. This is a dangerous place. Yet the symbolism of standing on top of the world gives me a chance to experience time on a cosmic scale.

It's hardly a secret that I'm skeptical of declarations that the aliens are out and about on our planet. Still, I try to answer every one of these mails and phone calls because, after all, it's not a violation of physics to travel from one star system to another.

We have to learn to become a new kind of entity on this world that has the maturity and the awareness to handle being a global species with the power to change our planet and use that power in a way that is conducive to the kind of global society we want to have.

Maybe it's because I look into the future professionally, but I see great possibilities for both humanity and our planet. I don't believe the thriving of one has to come at the expense of the other, and I'm deeply concerned to find out whether other people do think that.

Governments don't get elected saying, 'We're going to lower GDP next year,' governments get elected on saying, 'We're going to increase prosperity and the happiness and the wealth of our nations.' But that kind of capitalism will only lead to the destruction of our planet.

The dead spacecraft in orbit have become a permanent fixture around our planet, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly circling the Earth until the sun turns into a red giant about 5 billion years from now.

I read the Bible when I was 12 while studying for my bar mitzvah. I was also reading a lot of Dilbert comics at the time, and I guess the two kind of got fused in my mind. I've always imagined God as an irrational, distractible boss. It's my best explanation for our planet.

When the space shuttle's engines cut off, and you're finally in space, in orbit, weightless... I remember unstrapping from my seat, floating over to the window, and that's when I got my first view of Earth. Just a spectacular view, and a chance to see our planet as a planet.

If we each take responsibility in shifting our own behavior, we can trigger the type of change that is necessary to achieve sustainability for our race or this planet. We change our planet, our environment, our humanity every day, every year, every decade, and every millennia.

As the great grandchildren of the industrial revolution, we have learned, at last, that the heedless pursuit of more is unsustainable and, ultimately, unfulfilling. Our planet, our security, our sense of equanimity and our very souls demand something better, something different.

In the end, the only heritage we have is our planet, and I have decided to go to the most pristine places on the planet and photograph them in the most honest way I know, with my point of view, and of course it is in black and white, because it is the only thing I know how to do.

Clinton understands that climate change is real, is caused by human activity and is one of the great environmental crises facing our planet. She knows that we must transform our energy system away from fossil fuels and move aggressively to energy efficiency and sustainable energy.

I am joining the hundreds of thousands who shall be marching in the Virtual March on Washington to Stop Global Warming in order to demonstrate the concern that we all hold for the future of our planet and all the living things - flora, fauna, human and animal - that exist upon it.

Of course, the plea for respect for nonhuman life goes far beyond the scientific delight of familiarity with our planet mates. The nonhuman forms of life with which we 6,000 million talking, upright apes share this finite planet are directly or indirectly connected to our well-being.

With about a dozen assorted ongoing conflicts in the news every day, and with the stories becoming more horrific, the level of sadness becomes unbearable. And what becomes of our planet when that sadness becomes apathy? Because we feel helpless. And we turn our heads and turn the page.

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