The Environment and Humanity’s Future
A four-part series about the environment and humanity’s impact upon it: Think of all the issues that could be addressed—the efforts, theories and competing ideas that could be analyzed—and, after all is said and done, the many different ways this series could conclude.
The article “Lessons From Easter Island” presents a historic example of what happens when human beings take the environment for granted, indiscriminately stripping the planet of its natural resources, bringing society to the brink of collapse. History also shows that man refuses to learn from the past, thus repeating disastrous patterns—ultimately on a global scale.
Earth’s Resources,” we look at today’s landscape: The world population is increasing to disastrous proportions. And with China and India, two of the most populous countries on earth, emerging as First World nations, there are too few natural resources available to maintain the industrialized, high-tech, “Me first” lifestyles that billions wish to copy from the West. In addition, cities continue to absorb surrounding towns and suburbs, transforming into burgeoning megacities that encroach upon farmlands and wildlife areas. These and other factors are contributing to a future scenario of global violence as peoples and nations clash over food, water, oil and other disappearing necessities of life.Then, in our article “Is Going Green the Answer?” we look at the efforts offered to solve the situation before things grow worse.
Finally, in “The Environment, Dwindling Resources and Mankind,” we ask, How did humanity come to this point in the first place—and what will be its final outcome?
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Do parallel universes really exist?
This thought boggles the mind and yet, it is still comprehensible. Notions of parallel universes or dimensions that resemble our own have appeared in works of science fiction and have been used as explanations for metaphysics. But why would a young up-and-coming physicist possibly risk his future career by posing a theory about parallel universes?
With his Many-Worlds theory, Everett was attempting to answer a rather sticky question related to quantum physics: Why does quantum matter behave erratically? The quantum level is the smallest one science has detected so far. The study of quantum physics began in 1900, when the physicist Max Planck first introduced the concept to the scientific world. Planck's study of radiation yielded some unusual findings that contradicted classical physical laws. These findings suggested that there are other laws at work in the universe, operating on a deeper level than the one we know.
In fairly short order, physicists studying the quantum level noticed some peculiar things about this tiny world. For one, the particles that exist on this level have a way of taking different forms arbitrarily. For example, scientists have observed photons -- tiny packets of light -- acting as particles and waves. Even a single photon exhibits this shape-shifting [source: Brown University]. Imagine if you looked and acted like a solid human being when a friend glanced at you, but when he looked back again, you'd taken a gaseous form.
This has come to be known as the Heisenberg Uncertainty Principle. The physicist Werner Heisenberg suggested that just by observing quantum matter, we affect the behavior of that matter. Thus, we can never be fully certain of the nature of a quantum object or its attributes, like velocity and location.
This idea is supported by the Copenhagen interpretation of quantum mechanics. Posed by the Danish physicist Niels Bohr, this interpretation says that all quantum particles don't exist in one state or the other, but in all of its possible states at once. The sum total of possible states of a quantum object is called its wave function. The state of an object existing in all of its possible states at once is called its superposition.
According to Bohr, when we observe a quantum object, we affect its behavior. Observation breaks an object's superposition and essentially forces the object to choose one state from its wave function. This theory accounts for why physicists have taken opposite measurements from the same quantum object: The object "chose" different states during different measurements.
Bohr's interpretation was widely accepted, and still is by much of the quantum community. But lately, Everett's Many-Worlds theory has been getting some serious attention. Read the next page to find out how the Many-Worlds interpretation works.
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