ScienceIQ.com

Is Your Immune System Educated?

When spring comes, do you hide indoors because your eyes and nose water, and you can't stop sneezing? Do cats or dogs cause you the same symptoms? Have you wondered why you have allergies and other people don't? Perhaps your immune system missed out on an education when you were young! ...

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ImmuneSystem
Biology

Splitting Hairs

Pluck a single strand of hair from your head and you've lost what scientists call the hair shaft. The shaft is made of three layers, each inside the other. The outer casing is the cuticle. Under an ... Continue reading

SplittingHairs
Engineering

Don't Blow A Gasket!

Don't blow a gasket! Who hasn't heard this old adage at some time? What does it actually mean, and for that matter, what is a gasket? Gaskets are simple structures used to fill in and seal the spaces ... Continue reading

DontBlowAGasket
Engineering

How Can A Bullet-proof Vest Stop A Bullet?

Here's an experiment: take the small coil springs from a dozen or so retractable pens and roll them together in a heap until they are thoroughly tangled and entwined. Now try to pull them apart from ... Continue reading

BulletproofVestStopABullet
Astronomy

N81

NASA's Hubble Space Telescope has taken a 'family portrait' of young, ultra-bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200,000 ... Continue reading

N81

What's In Your Water?

WaterSewageThe United States has strict policies on water treatment systems and sewage drainage, but what about other countries? 'Don't drink the water' is the first thing most people hear when they tell their friends they're going to Mexico. So what exactly is in the water and how does it get there? Do Mexicans get sick from their water too?

As water runs through watersheds, it picks up microorganisms, such as E.coli, Cryptosporidium, and Giardia from cow waste and Salmonella from chicken waste. These organisms, when taken in by humans, can cause flu-like symptoms such as fever, vomiting, and diarrhea. Most groundwater is considered to be safe for drinking since it runs through layers of dirt which filter out harmful microorganisms. In the United States, any raw human sewage is required to be treated. Virtually all water has some microorganisms in it, harmful or harmless and in varying amounts. We are used to the water where we live and most people don't become ill from drinking the water they have drunk all their life. So why do we get sick from drinking Mexico's water?

The main reason people from the United States become ill from drinking Mexico's water is because we are not used to the amount or kinds of microorganisms present in their water. The people who live in Mexico are almost immune to the microbes present in their drinking water. So, why are their water supplies so polluted? Their water treatment facilities are not advanced; therefore, large investments are required to improve the quality of Mexico's water.