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The space animal hypothesis proposes that reports of flying saucers or UFOs might be caused not by technological alien spacecraft or mass hysteria, but rather by animal lifeforms ("space critters") that are indigenous to Earth's atmosphere or interplanetary space.
Atomist Epicurus thought that the processes that created the world, its animals and plants should have created other worlds elsewhere, along with their own animals and plants. Aristotle thought instead that all the earth element naturally fell towards the center of the universe, and that would made it impossible for other planets to exist ...
An ouroboros in a 1478 drawing in an alchemical tract [1]. The ouroboros or uroboros (/ ˌ j ʊər ə ˈ b ɒr ə s /; [2] / ˌ ʊər ə ˈ b ɒr ə s / [3]) is an ancient symbol depicting a serpent or dragon [4] eating its own tail.
Projection of the Kardashev scale to 2040 based on data from the International Energy Agency World Energy Outlook. Kardashev presented for the first time a classification of civilizations according to the level of the rate of their energy consumption, or ability to harness power, in an article entitled Transmission of Information by Extraterrestrial Civilizations, published in 1964 first in ...
Defensive Batesian mimics, like this bumblebee-mimicking hoverfly, are the antithesis of aggressive mimics.. Aggressive mimicry stands in semantic contrast with defensive mimicry, where it is the prey that acts as a mimic, with predators being duped.
In response to this proposal and in order to illustrate the arbitrariness and cultural specificity of any attempt to categorize the world, Borges describes this example of an alternate taxonomy, supposedly taken from an ancient Chinese encyclopaedia entitled Celestial Emporium of Benevolent Knowledge. The list divides all animals into 14 ...
In science fiction, uplift is the intervention in the evolution of species of low-intelligence or even nonsentient species in order to increase their intelligence. [1] This is usually accomplished by cultural, technological, or evolutionary interventions such as genetic engineering.
The clan with which the humans have contact in the film lives "in a giant tree that sits on a vast store of a mineral called unobtainium, which humans want as an energy supply." [ 1 ] Cameron has described Avatar as more " science fantasy " than true science fiction and has said that he would explain in the novel for the film why in the ...