Posts tagged evolution
Science in 2013 played a more important role than ever. At the same time, many intriguing discoveries were made. Here is a list of five major scientific discoveries according to the magazine National Geographic.
1. Space has become more ‘crowded’
In 2013 researchers from California Institute of Technology suggested that there are no less than 100 billion exoplanets in the orbits the Milky Way’s stars.
Obviously, not all of them are suitable for living. The November report from NASA Keck Observatory suggests that one out of five stars may have Earth-like planets in their habitable zone. More recent climate studies of habitable zones claim that this probability may be too high although there are still a very large number of potentially habitable planets. (more…)
It may look like a script from an episode of «X-Files», but it is definitely a subversive and highly imaginative theory developed by an American scientist. As the theory supports, human was not born on Earth, but on another planet, that is why he demonstrates a series of “dysfunctions”, which would not exist if he was the “product” of Earth. The theory states that we are by nature unruly and aggressive beings and that is why highly developed aliens brought the human population together and exiled them to Earth…
This extremely… advanced, but definitely interesting theory was developed by Professor of ecology Ellis Silver. The “signs” of extraterrestrial origin are quite in accordance with it. As professor says, human has problems with his back and often suffers from pain because our species descended from a planet with less gravity than on Earth. According to Silver, we also face problems when we are exposed to direct sunlight for a relatively short time because we were not designed to come in so close contact with the sun.
An additional argument offered by the Professor concerns parturition difficulties and especially those resulting from the fact that the size of the head of a newborn child is disproportionately large. We are the only species on the planet with (more…)
In the “War of the Worlds” by Herbert Wells Martian invaders were defeated by the common cold, which none of the sides took into account. Could something similar happen to the astronauts who will land on Mars? What if the first extraterrestrial life form humans will come into contact with will be viruses? These issues are posed in the journal Astrobiology by Dale Griffin.
Biologists do not consider viruses living beings. They are smaller than bacteria and cannot reproduce themselves: that is why to survive they need to invade a cell and use its genetic tools. Nevertheless, it is viruses that (more…)
For 80 years now we are told that the first self-replicating molecules appeared in the primordial soup in the Earth’s shallow waters, which happened 4 billion years ago. This “soup” was composed of amino-acids, polypeptides, and nitrogenous bases of nucleotides formed as a result of electrical charges, high heat and cosmic radiation.
However, the experiments to replicate similar processes have given mixed results: the basic monomers began to form substances that prevented the expected complexity to exist in this “soup” of polymers.
Later, the problem seemed to have been simplified by the “RNA world” hypothesis, but the probability of spontaneous formation of RNA, which wouldpossess catalytic properties, is very low. It is estimated that four billion years (more…)
Scientists at the University of Sheffield claim to have made a fascinating discovery, which proves the existence of extraterrestrial life.
These are images of a body that was found in the stratosphere, recorded with an electron microscope. The body was found by a scientific balloon at an altitude of 27 kilometers from the Earth’s surface and this, according to the scientists, proves that it cannot have originated from our planet. These microbes have probably come from somewhere else…
“Most would suggest that these particles simply have drifted to the stratosphere from Earth. Yet, it is commonly accepted that an organism of this size is impossible to reach an altitude of 27 km. The only exception is a violent volcanic eruption, but nothing like that was recorded during the three years of our research,” said Milton Wainwright, Professor of Molecular Biology at the University. (more…)