Life on Earth Quotes

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.

The universe is specifically tweaked to enable life on earth-a planet with scores of improbable and interdependent life-supporting conditions that make it a tiny oasis in a vast and hostile universe.

Until about two billion years ago, it was impossible to have any life on earth; that is, there was so much radiation on earth you couldn't have any life — fish or anything. Gradually, about two billion years ago, the amount of radiation on this planet—and probably in the entire system—reduced and made it possible for some form of life to begin... Now when we go back to using nuclear power, we are creating something which nature tried to destroy to make life possible... Every time you produce radiation, you produce something that has a certain half-life, in some cases for billions of years. I think the human race is going to wreck itself, and it is important that we get control of this horrible force and try to eliminate it.

Known as the biosphere to scientists and as the creation to theologians, all of life together consists of a membrane around earth so thin that it cannot be seen edgewise from a satellite yet so prodigiously diverse that only a tiny fraction of species have been discovered and named.

Most life on Earth is microbes. we've only just scratched the surface of the microbial realm. Probably less than .1% of microbes have been classified let alone cultured or had their genes sequenced, so really that microbial realm is a mystery.

Earth has provided a stable platform for the evolution of life over 4 billion years. But that lease is limited; we know for sure that it will expire after a few billion more. . . . If we are wise, we will have furnished our new apartments long before that time.

It wasn't through the mind, through thinking, that the miracle that is life on earth or your body were created and are being sustained.

There have only been about a half dozen genuinely important events in the four-billion-year saga of life on Earth: single-celled life, multicelled life, differentiation into plants and animals, movement of animals from water to land, and the advent of mammals and consciousness.

From a personal perspective, I am disappointed that we have yet to really achieve a full understanding of the origins of life on Earth. What was the spark that, billions of years ago, kickstarted the process of evolution that has brought us life as we know it today? I hope that we will get some answers to that in my lifetime.

The existence of nuclear weapons presents a clear and present danger to life on Earth.

So how can we test the idea that the transition from nonlife to life is simple enough to happen repeatedly? The most obvious and straightforward way is to search for a second form of life on Earth. No planet is more Earth-like than Earth itself, so if the path to life is easy, then life should have started up many times over right here.

This all comes down to what we know about life on Earth.

The earth is the very quintessence of the human condition.

What humans do over the next 50 years will determine the fate of all life on the planet.

There is a deep interconnectedness of all life on earth, from the tiniest organisms, to the largest ecosystems, and absolutely between each person.

Development of space will improve life on Earth. Access to space is important for agriculture, humanitarian efforts, communications, and navigation.

The Kingdom of God is not a matter of getting individuals to heaven, but of transforming the life on earth into the harmony of heaven.

We must recall the most important of humanity guidelines: Be polite. Being polite is possibly the greatest daily contribution everyone can make to life on Earth.

What better way to learn about life in the ocean--and how we are changing it--than through stories of blind zombie worms, immortal jellyfish, and unicorns of the sea? The Extreme Life of the Sea is an insightful book that inspires awe and wonder about our ocean, and brilliantly shows us the immense possibilities of life on Earth.

99.99 percent of all species that have ever lived are no longer with us.

When you look more generally at life on Earth, you find that it is all the same kind of life. There are not many different kinds; there's only one kind. It uses about fifty fundamental biological building blocks, organic molecules.

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

The issue, as correctly emphasized by Carl Sagan, is the probability of the evolution of high intelligence and an electronic civilization on an inhabited world. Once we have life (and almost surely it will be very different from life on Earth), what is the probability of its developing a lineage with high intelligence? On Earth, among millions of lineages of organisms and perhaps 50 billion speciation events, only one led to high intelligence; this makes me believe in its utter improbability.

Science reveals that all life on Earth is one.