A Quote by James Hansen

As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species. — © James Hansen
As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species.
If enough species are extinguished, will the ecosystems collapse, and will the extinction of most other species follow soon afterward? The only answer anyone can give is: possibly. By the time we find out, however, it might be too late. One planet, one experiment.
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.
Once we start deliberately messing with the climate systems, we could inadvertently shift rainfall patterns (climate models have shown that rainfall in the Amazon might be particularly vulnerable), causing collapse of ecosystems, drought, famine, and more.
The most irrevocable of [natures] laws says that a species cannot occupy a niche that appropriates all resources--there has to be some sharing. Any species that ignores this law winds up destroying its community to support its own expansion.
It's a fair guess that at the rate we're destroying habitat, especially but not exclusively in the tropics, we're pushing to extinction about one species every hour. That doesn't count the species whose populations are being reduced so greatly that diversity within the population is essentially gone.
We're handing them [young people & future generations] a climate system which is potentially out of their control. We're in an emergency: you can see what's on the horizon over the next few decades with the effects it will have on ecosystems, sea level and species extinction
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.
Each of these [bacterial] species are masterpieces of evolution. Each has persisted for thousands to millions of years. Each is exquisitely adapted to the environment in which it lives, interlocked with other species to form ecosystems upon which our own lives depend in ways we have not begun even to imagine.
When I am at a dinner table, I love to ask everybody, 'How long do you think our species might last?' I've read that the average age of a species, of any species, is about two million years. Is it possible we can have an average life span as a species? And do you picture us two million years more or a million and a half years, or 5,000?
For me the protection of Planet Earth, the survival of all species and the sustainability of our ecosystems is more than a mission. It is my religion and my dharma.
We ourselves are part of a guild of species that lie within and without our bodies. Aboriginal peoples and the Ayurvedic practitioners of ancient India have names for such guilds, or beings made up (as we are) of two or more species forming one organism. Most of nature is composed of groups of species working interdependently.
A large animal needs a large area. If you protect that area, you're also protecting thousands of other plants and animals. You're saving all these species that future generations will want - you're saving the world for your children and your children's children. . . . The destruction of species is final. If you lose a species, you lose the genes, you lose all the potential drugs and potential foods that could be useful to the next generations. The ecosystems will not function as they have.
One of the dangers [that Donald Trump poses, due to the augmented risk of nuclear war] is unquestionable. Of the two existential threats - the threats to the termination of the species basically and most other species - one of them, climate change, on that I think there's no basis for discussion.
The Creator would appear as endowed with a passion for stars, on the one hand, and for beetles on the other, for the simple reason that there are nearly 300,000 species of beetle known, and perhaps more, as compared with somewhat less than 9,000 species of birds and a little over 10,000 species of mammals.
Clearly, we are a species that is well connected to other species. Whether or not we evolve from them, we are certainly very closely related to them. A series of mutations could change us into all kinds of intermediate species. Whether or not those intermediate species are provably in the past, they could easily be in our future.
Climate change is not a major issue because it will cause sea level rises or temperature increases, since we know how to live at higher elevations and regulate the temperature within our homes. It is a major issue because ecosystems are finding it difficult to adapt to the rapidity of the climate and environmental changes and are dying off, thereby accelerating the species extinction that is already underway due to our consumption habits.
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