Saturday, October 30, 2010

Planet of Horrors: Halloween Special

For this Halloween, the Pokiphlanon team has decided to examine the spookiest animals according to pop culture, and then tell you our top ten!

Spooky Pop Culture Critters:

Bats:
Bats are flying mammals, that are not, as popularly believed, related to mice. Nor do they all suck blood. In fact, most bats eat either fruit or insects. Many species of bat actually help control pest insects like mosquitoes! Vampire bats, the blood-sucking bats, are found only in central and south America. Some other central and south american bats eat fish, small vertabrates, and even other bats!

Ravens and Crows:
Although ravens and crows are often thought of as evil harbingers of doom, the facts could not be more different. Ravens and crows are among the smartest of all birds, up with parrots! They are omnivores, and can remember and recognize faces for two years! They can also communicate about this to others! We humans have so much in common with them.

Rats:
Again, we have a smart animal, although not nearly on the scale of the Ravens and Crows. Rats are much more intelligent than their cousins the mice, and can associate shapes with food, and be trained to run mazes, as is well known. Rats are associated with filth for a good reason, they are amazing in their tolorance of filth. Rats can live almost anywhere, assisted by humans. The rasponsibility for the black death had been pinned on rats, but according to many rat-lovers and the Pixar short "Your friend the Rat", the rat flea was actually responsible. I now propose a third explanation: The plague virus caused the plague, but since viruses can undoubtedly not reason, we cannot really "Blame" anyone.

Spiders:
For the first time yet, we have here a creature that often deserves it's reputation as a terror. Although many, including myself, point out the Red-kneed Tarantula, a creature that can be docile and makes a good pet, as an exception. However, although mos spider venom cannot kill humans, many species are lethal. The black widow and Australian Funnel-web spider are among the most lethally venomous spiders on earth. Scientific studies and Mythbusters have shown that the common myth of the Daddy Longlegs spider is false; the spiders fangs can penetrate human skin and the venom is almost totally harmless. However, it is important to remember that most spiders will run before they attack.

Werewolves:
Contrary to popular belief, werewolves are in fact, real! Just Kidding!

Other Scary Critters:

Cone Snail:
Cone Snails may look harmless, but in fact, these small ocean mollusks are in fact deadly. Many have toxic bites that can kill a human.



Stingray:

Stingrays are scary in that they have spines up to a meter long that can cause serious damage to anyone that treads on them. In my opinion, the really scary thing about them is that they are hidden in the sand until it is too late.

Hippopotamus:
Contrary to popular belief, lions are not the most dangerous animals in Africa. Nor are crocodiles. Not leopards either. In fact, the most human deaths in Africa are caused by the malarial mosquito. After that, it's probably the Tsetse fly, the primary carrier of sleeping sickness. However, the most dangerous large animal is the hippopotamus. Hippos can run surprisingly fast, and are highly aggressive. Their huge jaws can bite crocodiles in half, and if you get between a hippo and the water, you're in big trouble. Strangely, hippos occationally behave in a very different manner. A behavior first documented in the PBS|Nature episode Capturing the Killer Croc, hippos will gently lick the hide of a dead animal, in the case in Killer Croc, a cow. They then lay down around the calf, in what has been compared to a funeral rite.
The second most dangerous large animals in Africa are Cape Buffalo.

Thanks for reading, and happy Halloween!

Tuesday, October 12, 2010

New Earth-Like Planet Outside the Solar System

The news was released around September 29th: Astronomers had found the most Earthlike planet yet. The new exoplanet, meaning a planet outside our solar system, is called Gilese 581g, and may harbor life. Gilese 581g is 3 times the mass of earth, and orbits it's star, Gilese 581, in 37 days. This may seem like a close orbit and a large planet, but jet fighter pilots survive at 3 Gs. (One G is the gravity of earth; 2 Gs is twice the gravity of Earth, not to be confused with grams, which is about the weight of a paper clip.) The orbit of 37 days may seem like a short orbit, implying a close orbit and high temperatures, but Gilese 581 is a red dwarf, and therefore smaller and less bright than our sun. Another oddity is the length of Gilese 581g's day, it lasts forever. Due to what astronomers call "tidal forces" (because they are the same forces that cause the tides), one side of Gilese 581g always faces it's sun. The other side is in permanent darkness. Any life would exist on the band between the two sides. The area between "too close to he star!" and "too far away from the star!" is called the goldilocks zone: not too hot and not too cold. Gilese 581g's orbit is right in the goldilocks zone.

However, one of the most amazing things about Gilese 581g is not its relatively small size or distance to its sun, but its distance to earth. Gilese 581g is only 20 light-years from earth. (Contrary to many people's beliefs, the light-year is actually a unit of measurement, which masures the disance light travels in a year in a vacum.) Although most would consider this a very long way, 20 light-years is an astoundingly short distance in porportion to the size of our galaxy. If humans could develop a space ship that could go half the speed of light, a probe could return results within sixty years, a short time in comparison to the scale of the universe. Not only that, but according to Einstein’s theory if relativity, as speed increases, the time experienced by the object moving decreases! This means that a hypothetical astronaut would be able to make it there within the confines of her/his lifetime!

Although most reading this right now will probably not live to see the results of a mission, it’s something the human race should probably consider, for the sake of our children and to perhaps answer the ultimate question: “Are we alone?”

Sources:

National Geographic

Science News


Friday, October 1, 2010

Cockroach Brains - The New Miracle Drug?

  What would it take to make you take a pill of cockroach brains? Maybe... Getting Sick? A new studies have shown that the brains of the common cockroach contain antibiotics that can kill antibiotic-resistant strains of E. Coli and Staphylococcus aureus (Another harmful bacteria, better known as MRSA). This is how cockroaches and possibly other insects in unsanitary environments survive without getting infected all the time. So would You take the cockroach Rx?


Sources:

National Geographic

Science News