DISCOVERY

HEADPHONES

Wearing headphones is not bad, but wearing them for more than 30 minutes at a go is bad for the ears. When you put on headphones, you cover your ears from the natural air, which increases the production of bacteria by 700% in 1hr. Your eardrum naturally can not bear the influx of bacteria in that quantity so it starts to react by paining or hearing loss in long term.

Secondly, when you are listening to fast music/ high beat sound which goes direct to your brain due to headphones, it affects the fine tissue/membrane of the brain eventually listener becomes hyper or excited which is bad in long run. Visit SOURCE

TARANTULA.

Spiders are believed to have spent 300 million years sharpening their skills as well as staying alive and giving rise to new generations of spiderlings. They have emerged some 100 million years ago, an era predating back-boned animals.

Spiders are classed with arthropods. Almost all the species in arthropods have joint legs and their external armor is hard and tough. Perhaps you'd be wondering as to how long do spiders live. Stick to the end and you'll know what you want! Spiders alone claim the order Araneae.

 Currently, scientists have successfully found 38,000 species of spiders all around the world. It is still considered to be the tip of an iceberg since equal numbers of spiders are believed as undiscovered.

The widespread presence of spiders makes them a popular species; they are found in houses, gardens, forests, other terrestrial habitats, and caves around the world. The South American Tarantulas, also called a bird-eating spider, is the largest spider species averaging 10 cm in length, with a leg span of up to 27 cm. The smallest spiders rarely exceed one millimeter in length when adult. However, all these species are predators but not all of them use venom to kill their prey. VISIT Source. 

MUSIC AND HEARTBEAT 

Music is one of the few activities which involves using the whole brain. It is intrinsic to all cultures and has surprising benefits, not only for learning the language, improving memory, and focusing attention but also for physical coordination and development. It relaxes the mood and lightens the soul

Not every type of music has a beneficial and calming effect. If the music is too loud and jarring, it can be disturbing and might compete with us for the work we are doing. Most benefits come from exposure to classical music. It has a soothing effect on the brain and the body.

Loud music has variable pitches. It usually gets louder and noisier. Researchers from Pavia University, Italy, in a study concluded that music with quicker tempos made people breathe faster which increased their heart rate and blood pressure. Whereas, on the contrary, slow and soft music brought the opposite results. It lowered heart rate and blood pressure. As a result of various such studies, music is now being used as a rehabilitation medicine for the sufferers of blood pressure. In cardiovascular units, slow and quiet music is played which relaxes the patients and lowers their blood pressure and heart rate.

Furthermore, loud music also creates aggression. Imagine a situation when you're going through some tough times and for the sake of relaxing, You, unknown to the opposite effects, listen to loud and unpleasant music. Rather than relaxing, it would irritate you and will generate a feeling of aggression which in no sense would relax you. Repeating the same with slow and soothing music, you will probably feel relaxed and refreshed.

Music can be inevitably beneficial for us if we only know what type of music should be heard in different situations. As music is not just a source of entertainment, but also a source for the good of our body and heart.

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DUTY ON SLEEP. 

Birds have developed an ability that let half their brain sleep while keeping the other half awake. Researchers report that ducks manage this trick to stay alert for predators while still getting some shut-eye. The findings suggest that different parts of the vertebrate brain can sleep independently of each other.

Although researchers have known about this so-called "unihemispheric" sleep for 3 decades, they could only guess why this particular kind of shut-eye evolved in birds. But when filming mallards for a different experiment, sleep researcher Niels Rattenborg of Indiana State University noticed a remarkable pattern. "When I put a camera on them, I noticed that ducks that were next to each other slept with the outside eye open," Rattenborg says. "

From there, the experiment designed itself."

Rattenborg, along with animal behavior experts Steven Lima and Charles Amlaner, placed four ducks in a row of clear tanks and waited for them to doze off. The ducks in the middle tanks would almost always sleep with both eyes shut, while those on the ends kept one eye open for about a third of the night. The side of the brain that controlled the open eye had the activity levels of an awake bird, while the other side had brain waves characteristic of sleep, according to electroencephalogram recordings. Even with just one eye open, the birds reacted to a slide of a predator in less than a fifth of a second.

The sleep pattern is as important as the amount, says Jerome Siegel, a sleep researcher at the University of California, Los Angeles. "There's a tremendous difference in the way animals sleep," he says. Each animal has evolved its way to balance the need for sleep with the need for safety: Rats hide in nests, horses slumber lightly out in the open. Yet every animal needs to get its rest, one way or another. "Our results clearly emphasize how important sleep is," says Rattenborg. What no one knows yet, says Siegel, is why we need to sleep.

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