9 Questions About Our World That Scientists Still Haven’t Found Answers To
However strange it may sound, there are several unresolved issues that still stand as blank spots in our knowledge of the world.
We at Bright Side suggest it's time to be amazed by the complexities of life once again. Who knows? Maybe one day humanity will unravel these mysteries.
Why did nature give women large breasts?
Women's breasts, as with those of female apes, only fill up with milk when they need to feed their newborn offspring. But, unlike animals, women's breasts remain comparatively large even when they aren't breastfeeding. Experts are constantly debating why this is the case.
The majority of evolutionary biologists believe that breasts are meant to attract members of the opposite sex. They seem to signify to potential mates that their children will be well looked after by the individual woman.
Anthropologists, however, find this idea doubtful, as in many cultures the female bust is not seen as sexually arousing by the male population.
Why do whales throw themselves onto the shores?
People have been pondering why entire groups of whales and dolphins end up beached on seashores since the days of Aristotle. Having got stuck in shallow waters, they die quickly. There are dozens of hypotheses that are meant to explain why this happens:
- A shift in the wind drives plankton toward the shore, which in turn entices the animals to dry land.
- Sunstorms have an effect on these mammals in an unexplained way.
- Attacks by predators are to blame.
- Noise pollution in the oceans damages the whales' auditory organs and their ability to orientate themselves.
What is star jelly?
People in various places around the world have found a strange jelly-like substance of unknown origin lying on the grass. When analyzed, it has been shown to contain traces of bacteria and the DNA of worms, probably because the samples were covered with earth.
According to various explanations, the substance is produced by blue-green algae or amphibians. The belief also exists that it's a new form of fungus.
There's still no definite answer, but in the meantime it has acquired the name "space jelly" due to the claim that the substance was brought to Earth by meteorites.
How did the giant hexagon form on Saturn?
One stunning atmospheric phenomenon on the planet Saturn is a hexagonal cloud formation 25,000 km in diameter. As far as can be understood, this is a rather unusual hurricane system.
Despite having been able to model this system in laboratory conditions, scientists still don't understand why it has such a beautiful appearance and why it's lasted so long.
Will we ever be able to have conversations with robots?
Artificial intelligence is constantly developing, but whether it will ever reach a level of independence that will allow us to talk to robots as equals remains unknown.
Currently, all attempts to "teach" a computer to debate with a human being have failed.
Where did life come from?
Today the predominant theory for explaining the origins of life is one that argues that it emerged from non-organic compounds produced by physical and chemical processes.
But we still can't determine where the boundary lies that sets non-living matter apart from living creatures. We also don't know how molecules ended up with the ability to pass on genetic information.
Is it true that animals can sense earthquakes?
Strange behavior on the part of household pets right before some kind of natural disaster has been observed since the days of ancient Greece.
Explaining this fact is still beyond our abilities, in part because it's extremely difficult to investigate it in the form of an experiment as no one can force a cataclysmic natural event to occur.
The opinion exists that charged particles expelled into the air before an earthquake are the cause of animals' reactions, though this remains to be corroborated.
What are those dark spots on Mars?
Scientists studying Mars have announced that the dark strips that sometimes appear on the planet's surface may be caused by the periodic flow of water.
It's been established that these markings appear on slopes of the Red Planet during spring and disappear as the season shifts to winter, and the picture repeats itself each year in the same areas.
Why all of this happens is still not fully understood. However, some experts have ruled out the possibility that this is caused by water.
Where did the Sumerians come from, and what language did they speak?
It was this civilization which Babylon and Assyria derived their own cultures from. The Sumerians were trailblazers in a whole number of areas from astronomy to physics.
Even today, the origins of their society remain one of the most difficult questions for experts to unravel. All attempts to find connections between the Sumerian language and that of others have come to nothing, as Sumerian cuneiform writing was only decoded through the Akkadian language, which is completely different. The latter is itself completely different to any other known language.