A Quote by Rusty Schweickart

An asteroid can literally destroy 80 or 90 percent of the species that are alive on Earth. These are big events. I mean, this is called extinction. — © Rusty Schweickart
An asteroid can literally destroy 80 or 90 percent of the species that are alive on Earth. These are big events. I mean, this is called extinction.
There is good reason to believe that we have already entered the Sixth Extinction, a period of destruction of species on a massive scale, comparable to the Fifth Extinction 65 million years ago, when three-quarters of the species on earth were destroyed, apparently by a huge asteroid.
Nature is not here to keep you alive. It has just as many ways to kill you as it does to sustain you. And if you cherry-pick this fact, you are left thinking that earth is some haven for life, but 96, 97 percent of all species that ever lived on earth are now extinct from the actions of the earth itself and an occasional asteroid to stir the pot.
Global warming, along with the cutting and burning of forests and other critical habitats, is causing the loss of living species at a level comparable to the extinction event that wiped out the dinosaurs 65 million years ago. That event was believed to have been caused by a giant asteroid. This time it is not an asteroid colliding with the Earth and wreaking havoc: it is us.
Using any reasonable definition of a scientist, we can say that 80 to 90 percent of all the scientists that have ever lived are alive now. Alternatively, any young scientist, starting now and looking back at the end of his career upon a normal life span, will find that 80 to 90 percent of all scientific work achieved by the end of the period will have taken place before his very eyes, and that only 10 to 20 percent will antedate his experience.
Many scientists would argue that we are now in what is called Extinction, and it's caused by this perfect extinction storm: climate change, habitat loss, pollution, unsustainable exploitation of species and habitat resources, and of course, human population explosion. All of these factors work together and conspire to drive a species to extinction on our planet, every half an hour.
Changing the asteroid's velocity changes the time when the asteroid crosses Earth's orbit. After all, just because it crosses Earth's path doesn't mean there is necessarily going to be a collision. It has to cross Earth's path when the Earth is right there.
Economists often talk about the 80/20 Principle, which is the idea that in any situation roughly 80 percent of the “work” will be done by 20 percent of the participants. In most societies, 20 percent of criminals commit 80 percent of crimes. Twenty percent of motorists cause 80 percent of all accidents. Twenty percent of beer drinkers drink 80 percent of all beer. When it comes to epidemics, though, this disproportionality becomes even more extreme: a tiny percentage of people do the majority of the work.
The extinction of Homo Sapiens would mean survival for millions, if not billions, of Earth-dwelling species. Phasing out the human race will solve every problem on Earth - social and environmental.
There are millions of different species of animals and plants on earth--possibly as many as forty million. But somewhere between five and fifty BILLION species have existed at one time or another. Thus, only about one in a thousand species is still alive--a truly lousy survival record: 99.9 percent failure!
We scientists can argue forever about important topics like slightly different flavors of vanilla ice cream. Consider the silliness of this debate: one group of scientists found a 90% decline of big fish and criticized fishery management. Some other scientists found an 80% decline and started a big argument with the 90% people. Who cares if it's 80% or 90%? The real question is whether it's OK to let fishermen take most of the big fish out of our oceans.
There are a few things that we can do. One of them is that we can increase the taxes that people are paying who are the extremely wealthy in our communities. So, 70 percent, 80 percent, we've had it as high as 90 percent.
There is a one-in-300 chance that Earth will be struck on March 16, 2880, by an asteroid large enough to destroy civilization and possibly cause the extinction of the human race. But, on the bright side, Prince could re-release his hit song with the new refrain 'We're gonna party like its twenty-eight seventy-nine.'
We can't say that when x happens we get a mass extinction. To the extent we understand mass extinction, one has been caused by glaciation event, one has been caused by a massive climate change, and one has been caused by an asteroid. These events turn out to have no precedent.
The earth has continued to change, from rapid climatic changes that have caused the glaciers and the ice sheets to basically bulldoze the landscape and cause species compression in the tropics and cause mass species extinction - you know, all these huge changes. In terms of evolution, every species is doomed to eventual extinction. The natural world is constantly changing. So, to deal with "environmental problems," in quotes, totally misses the issue. That is not the way we want to define our problem if we're going to find our solution.
Flair was a guy who 90 percent of your match was called on the fly, while Savage was a guy who had 90 percent of it set in stone before the match began.
We can't have close to 90 percent of those prenatally diagnosed with an intellectual disability being aborted; 90 percent not going to school; more than 90 percent reporting discrimination in the healthcare system; and 90 percent unemployed, and tell ourselves that we're doing a good job. The obstacles to leading a full life for the vast majority of people with intellectual disabilities are far beyond what they should be, and far beyond what we should tolerate. So yeah, I want change.
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