Beetles and butterflies are sometimes restricted to small areas. Each mountain in a range, and even the different zones of a mountain, may have its own peculiar species. But the house-fly seems to be everywhere. I wonder if any island in mid-ocean is flyless.

The intuitive connection children feel with animals can be a tremendous source of joy. The unconditional love received from pets, and the lack of artifice in the relationship, contrast sharply with the much trickier dealings with members of their own species.

For a bird, especially for the more musically inventive, song is the defining characteristic, the primary way by which it knows itself and is known by others. To lose its species song is to lose not just its identity but some part of its presence in the world.

The damage that climate change is causing and that will get worse if we fail to act goes beyond the hundreds of thousands of lives, homes and businesses lost, ecosystems destroyed, species driven to extinction, infrastructure smashed and people inconvenienced.

It's our human nature to explore. Tens of thousands of years ago, our species walked out of Africa, traveling far and wide across the entire planet, from the Arctic to the tip of Tierra Del Fuego, making us the most geographically diversified species on Earth.

I think it's realistic to have hope. One can be a perverse idealist and say the easiest thing: 'I despair. The world's no good.' That's a perverse idealist. It's practical to hope, because the hope is for us to survive as a human species. That's very realistic.

What the fossil record does do is to force us to contemplate our place on the planet. We are but one species of several hominids that inhabited Planet Earth, and like our distant cousins who went extinct fairly recently, our time on Planet Earth is also finite.

Animal rights can be as extreme as not riding a horse, or not wearing leather, not having a pet at all. Animal welfare advocates are preventing the suffering of animals. And then there's conservation and species conservation and what conservation biologists do.

I used to have 30 different species of tarantulas, as well as two Australian scorpions that are considered the deadliest in the world. If stung by one, a person would die in 30 minutes. But when I had kids I had to get rid of them, of course. Those were intense!

We were shooting in a French island called La Reunion. One of my crew members gifted me free-diving equipment and took me to the waters on my day off. I spotted sharks and species of fish which can't be found elsewhere. It was a very refreshing experience for me.

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.

Some pundits have proposed that the aliens have come here to breed with us. Apparently, too much bike riding or something similar has rendered them incapable of reproducing within their own species. But do extraterrestrial infants toddle through your neighborhood?

Long after this wonderful event in the Earth's history, when the human species was spread over a good deal of Asia, Europe, and Africa, migration to the American continents began in attempts to find new feeding grounds and unoccupied areas for hunting and fishing.

The varying modes of flight exhibited by our diurnal birds of prey have always been to me a subject of great interest, especially as by means of them I have found myself enabled to distinguish one species from another, to the farthest extent of my power of vision.

Humans are an infant species, a mere 150,000 years old. But, armed with a massive brain, we've not only survived, we've used our wits to adapt to and flourish in habitats as varied as deserts, Arctic tundra, tropical rainforests, wetlands and high mountain ranges.

What's happened with society is that we have created these devices, computers, which already can register and process huge amounts of information, which is a significant fraction of the amount of information that human beings themselves, as a species, can process.

Human beings are a social species. We like to hang together in groups, just like wildebeests, just like lions. Wildebeests don't hang with lions because lions eat wildebeests. Human beings are like that. We do what that group does that we're trying to identify with.

When we settled our country, the dark forest was considered in some ways evil and something that you needed to plow or, later, bulldoze. We now have a new understanding of the interconnectedness of ecosystems and the need for bird flyways and why all species matter.

It's Nixon who created the Environmental Protection Agency. Clean Air and Water Acts. Endangered Species Act. Promoted affirmative action. One could go on and on with Nixon as a New Deal liberal on domestic policy and a hawk, but one with great geo-political skills.

There are so many ways to characterize evolutionary success. If one criterion is the number of millions of years that the species persists, we're still just infants. We're way too young of a species to tell if we were a creative fluke or if we have any staying power.

The Ocean Health Index is like the thermometer of the ocean. It will allow us to take the temperature to know what is going on at the global level, trying to integrate different impacts, including overfishing, invasive species, coastal development, and climate change.

The passenger pigeon, the golden toad, the Caspian tiger: they are all gone, and other species hang by a thread. Our actions are not merely driving other species to extinction: we threaten our own survival, too, by destabilising ecosystems and destroying biodiversity.

Certainly it is wrong to be cruel to animals and the destruction of a whole species can be a great evil. The capacity for feelings of pleasure and pain and for the form of life of which animals are capable clearly impose duties of compassion and humanity in their case.

In human history, we are going from knowledge to omniscience, from potence to omnipotence, from ethics and religion to righteousness. So, in my view, God comes at the end of this long process. This may not happen in our lifetimes or even in the lifetime of our species.

We, Homo sapiens, destroyed the majority of the large mammalian species in North America and Australasia just over 10,000 years ago. We, Homo sapiens, now are destroying the other species that presently exist on this planet at a rate of about 15,000 to 20,000 per year.

The rapidly spinning blades of wind turbines act like an apex predator that big birds never evolved to deal with. And because big birds have much lower reproductive rates than small birds, their deaths have a far greater impact on the overall population of the species.

My focus personally has been to be a conservationist, which is to save species, protect wild lands, sometimes bring animals into assurance colonies in the wild - like California Condors for example - and put them back in the wild. It's very different from animal rights.

I read the 'Old Testament' all the way through when I was about 13 and was horrified. A few months afterwards I read 'The Origin Of Species', hallucinating very mildly because I was in bed with flu at the time. Despite that, or because of that, it all made perfect sense.

Wildlife crime goes well beyond just a threat to endangered species but also has impacts on our society, economy and security. It undermines efforts to uphold the rule of law, acts as an agent for corruption, creates a barrier to development and fuels global instability.

My premise is that there's something hardwired into our DNA, that we as a species came and evolved from caves and clans and tribes, and therefore, we as a species care more about the things that are local to us than we care about the things that are 'over there' from us.

If you based your knowledge of the human species exclusively on adverts, you'd think that the normal condition of humanity was to be a good-looking single person between 20 and 35, with excellent muscle-definition and/or an excellent figure, and a large disposable income.

I'm not looking ahead joyfully to the rest of my life or the future of the human race. I've always written about man as an animal species among other animals, competing for limited resources. Our population is exploding. Our environment is dying. Science has debunked God.

The mineral world is a much more supple and mobile world than could be imagined by the science of the ancients. Vaguely analogous to the metamorphoses of living creatures, there occurs in the most solid rocks, as we now know, perpetual transformation of a mineral species.

We're basically this very young species, only 200,000 years old. We're one of the newcomers, and we're going through the same process that other species go through, which is, how do I keep myself alive while taking care of the place that's going to keep my offspring alive?

These studies resulted eventually in a complete sequence analysis of the complex from several species, and in the atomic resolution structure of the F catalytic domain of the enzyme from bovine mitochondria, giving new insights into how ATP is made in the biological world.

The purpose of farming is to deprive other species of the land and sequester it for our own use. But by perfecting the art of monoculture, it has become too easy for us to exterminate everything else, leaving no wild plants, no food for insects, and a barren land for birds.

If you're a gazelle, you don't have a very complex emotional life, despite being a social species. But primates are just smart enough that they can think their bodies into working differently. It's not until you get to primates that you get things that look like depression.

Consider: Life arose on Earth close to four billion years ago. Four billion years of slithering, swimming, and soaring life forms. But only in the last 200 thousand years has a species arisen that can fathom the laws of nature and build hardware able to signal its presence.

Thousands of years ago, humans domesticated every possible large wild mammal species fulfilling all those criteria and worth domesticating, with the result that there have been no valuable additions of domestic animals in recent times, despite the efforts of modern science.

Karan Thapar is an endangered species. They don't make them like him anymore. True, thousands have gone to the Doon Valley School after him, as indeed to Oxford and Cambridge universities. But Karan Thapar is more than the sum of his upbringing. He's a gentleman journalist.

Molecules A and B meet, marry, and beget the species. This takes place in one-millionth of a billionth of a second. This is a fundamental process in nature, and the world was looking for a way to be able to see the process. But many brilliant people said it couldn't be done.

Well I think on a simple ecological level that the diversity of this planet is important for our survival, that all of our different cultures, people are important to the health of the whole the same way that a species of animal should be saved and at a simple ecology level.

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 atmosphere and acidify the oceans.

I remember the day we found the gene for the inter-species signaling molecule like it was yesterday. We got the gene, and we plugged it into a database. And we immediately saw that this gene was in an amazing number of species of bacteria. It was a huge moment of realization.

Heads are a good deal, and I think they would be a common feature. It's hard to think of species that don't have heads, although there are some. It's good to have a head because it puts some of the sensory organs - eyes, ears, whiskers or whatever - next to the CPU, the brain.

We, as Americans, at least - I mean, I love my country - but we're so self-righteous sometimes, in terms of, like, our nationality, our country. But we're people from somewhere else; the true 'Americans' are the original peoples. It's funny, but we're a very territorial species.

Although we have, in theory, abolished human slavery, recognized women's rights, and stopped child labor, we continue to enslave other species who, if we simply pay attention, show quite clearly that they experience parental love, pain, and the desire for freedom, just as we do.

Researching real history has taught me to be bolder and more imaginative in building fantasy worlds and writing fantasy characters, to seek out the margins of history and the forgotten tales that illuminate the whole, complex truth of our flawed yet wondrous nature as a species.

The right question to ask from a Darwinian prospective is what was it about bipedalism that was so advantageous? Why did it lead to a - why did that adaptation ultimately lead to a species Homo sapiens that has come to dominate the planet today with six and a half billion people?

It is certainly for the interest of the service that a cordial interchange of civilities should subsist between superior and inferior officers, and therefore, it is bad policy in superiors to behave towards their inferiors indiscriminately, as though they were of a lower species.

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