Although genetic engineering has been a great step in fulfilling the world’s food requirement but gene therapy also promises to delete the defects that are caused because of faulty genes e.g thalessemia or color blindedness. There is no evidence of the fact that modified genes of plants might leak out to other species but humans themselves are willing to leak out genes. The Vacanti mouse was a laboratory mouse that had what looked like a human ear grown on its back. It provoked horror among the animal rights and advocacy groups and anti-genetics groups. Similarly the firefly fluorescent gene called Luciferase can be added into DNA of other species causing them to glow aswell as humans can be made to glow but a human right protection law protects us. But in Israel, genes of play are those of humans.
It is possible to isolate genes of various human characteristics. Its mind boggling to say that any biological property that exists in any living thing in any living world could be brought into human beings. It has its benefits like protecting people from genetically inherited illnesses but it doesn’t stop there, we are basically playing with evolution at a million times faster rate. With this not only the physical characteristics of human can be changed but also the mental characteristics. We already know of certain genes to cause to think in a certain way. The problem is there is no boundary between overcoming disease and providing enhancements. Such highly evolved super humans will be far superior to their humble ancestors, stronger, more intelligent and different to us as we are to earthworms. Some scientists might not realize this, but over a 1000 year time, the human species will split resulting in extinction of the weaker.
Damage: If you don’t know what’s Darwin’s theory of natural selection than it is “the nature selects those who have better chances of survival”
Preventable: Yes, stop playing with human genome.
4. The Big Chill
Observations suggest that the expansion of the universe will continue forever. If so, the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario is popularly called The Big Freeze. Moreover global warming can lead to this big freeze, depletion of ozone and gamma radiations may have other disastrous effects as well as a vicious cycle of warming which can end in freezing over. The earth has faced 3 ice-ages before as well due to warming of its unstable climate of volcanoes and meteors but now man is leading to this global warming.
Now how it works is that Global Warming, by introducing fresh water into the North Atlantic, could affect the Atlantic Conveyer Belt, an ocean current which transports warm tropical water to the western coast of Europe. The water then sinks to the depths of the ocean as it cools, while the heat is released into the atmosphere, and it is this released heat that is responsible for the moderate winters in Europe as compared to the harsher winters in North America. Therefore, there is a possibility that Global Warming could create the conditions for an Ice-age.
Moreover a star has its life, Earth’s fate is precarious and related to life cycle of the giant sun as this star will first get large enough to incinerate us first and then will get colder when the earth will have to face an inevitable Ice- age
Damage: Inevitable incineration followed by a forever lasting ice-age.
Preventatble: Forget it!
3. Nuclear Holocaust
Nuclear holocaust refers to the possibility of nearly complete annihilation of human civilization by nuclear warfare. Under such a scenario, all or most of the Earth is made uninhabitable by nuclear weapons in future world wars. Nuclear wars might seem unlikely but demise of Soviet Union a bunch of years back also seemed impossible. A nuclear war may or might not occur directly but there is a possibility of a faulty or accidental nuclear exchange that might arise by a technical fault in the ballistic system.
Abuse of the Atomic power source leads to what would now be called a chain reaction engulfing the entire world, so that “of the two hundred million members of the human race, all were burnt or roasted or suffocated.
Damage: A chain reaction that will not only burn life forms but will cause genetic defects making humans likes of the (mythical) orcs.
Preventable : Yes, start making out foreign! :/
2. Super Volcano Erupts
A supervolcano is a volcano capable of producing a super volcanic eruption , which is a volcanic eruption with ejecta greater than 1,000 cubic kilometers (240 cubic miles), which is thousands of times larger than most historic volcanic eruptions. Supervolcanoes are relatively new to science. Although there are only a handful of supervolcanoes, super volcanic eruptions typically cover huge areas with lava and volcanic ash and cause a long-lasting change to weather sufficient to cause extinction of species.
When Mount Tambora in 1815 erupted in indonesia, it caused massive disasters, it changed the entire climate but compare it to the Yellowstone super volcano, it appears a small pimple on the panet. However the Yellowstone super volcano is the largest known super volcano, it has a cycle of eruption every 600,000 years and now its been 640,000 years since it last erupted and to add its not dead, it shows great volcanism since 1923. When it will pop, it would be unlike any we have seen before. Once it explodes, it will boil out the other 5 supervolcanoes and the pimple ones, one pops and then all pop. It will be largest loudest explosion in the human history and will incinerate life into blazing ash and super heated gases.
Preventable: Not at all but you can flee off to the opposite directions, still might not be mitigatable.
1. Earth Spins Off Axis
The earth is held in its axis by a balance of forces, the pull of gravity from the sun and push of centrifugal force. The Earth currently has an axial tilt of about 23.5°. The axis remains tilted in the same direction towards the stars throughout a year and this means that when a hemisphere is pointing away from the Sun at one point in the orbit then half an orbit later this hemisphere will be pointing towards the Sun. This effect is the main cause of the seasons. With the exception of mercury, all the planets in our solar system are tilted on an axis. Uranus is however tilted on a side due to an asteroid collision in the past. So what would happen if earth suffers such a massive impact? It can cause our planet to shift in entirely a new axis or even catapulted into the sun.
If enough energy is provided then orbit of earth can be changed like that we assume of comets. It can be changed from elliptical to circular to hyperbolic. Such a collision will destroy the entire fabric of our planet causing devastation on a massive scale. It will cause heating of the planet because it will be hurled towards sun. There will be huge consequences even to the orbit of the moon if earth’s orbit changes. The north pole and Antarctica will boil. Ice caps will melt within days creating massive floods. Earthquake and super volcanic eruptions will tear apart the crust of planet.
Damage: Beyond your imaginations.
Preventable: Are you kidding me? Even if Earth would escape incineration in the Sun, still all its water will be boiled away and most of its atmosphere would escape into space. Those few who might survive will wait colliding into another planet or star and then there will be no planet. Zero. A horrible end of a beautiful experiment.