ScienceIQ.com

Why Are Zebra Mussels Successful As Invaders?

The zebra mussel (Dreissena polymorpha) is a small, non-native mussel originally found in Russia. In 1988, this animal was transported to North America in the ballast water of a transatlantic freighter and colonized parts of Lake St. Clair. In less than 10 years, zebra mussels spread to all five Great Lakes and into the Mississippi, Tennessee, ...

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ZebraMusselsInvaders
Astronomy

Blast Wave Blows Through the Solar System

Although the Sun provides the means for life on Earth, it has a dark side - the Sun regularly sends massive solar explosions of radiative plasma with the intensity of a billion megaton bombs hurtling ... Continue reading

BlastWaveSolarSystem
Chemistry

Radon, A Rare Element

To the best of our knowledge, the entire universe is constructed from just over a hundred different types of building blocks called atoms. Each has its own characteristic properties, and while there ... Continue reading

RadonARareElement
Astronomy

Microbes In Space

There are creatures that were living on the Space Station before the first astronauts went inside. Astronauts found a few living on the Moon. Scientists believe they could even live on Mars. These ... Continue reading

MicrobesInSpace
Engineering

Teeny Tiny Technology

What's the smallest thing you can imagine? Can you think of something extremely tiny that is also extremely strong--many times stronger than steel--and very flexible? Give up? The answer is carbon ... Continue reading

TinyTechnology

Cougars, A Jumping Star

CougarsAJumpingStarCougars would make great basketball or track-and-field players. Of all the big cats, they are the best jumpers. They can jump 40 feet forward from a standing position, and 15 feet or higher straight up - higher than a basketball hoop.

They're strong, too. A cougar, weighing typically 130 pounds but as much as 200 pounds, can use its jaw to kill an elk four to five times its weight, by leaping onto the animal's back and breaking its spinal cord at the base of its skull. The cougar can kill almost any animal, but it avoids bad odds, keeping clear of wolves, grizzly bears, and other big cats. But its killing prowess is only one reason you probably wouldn't want a cougar on your team.

The cougar is a solitary cat, rarely seen; Native Americans once called it the 'ghost walker.' It avoids other animals and even, except when mating, other cougars. It roams a territory as large as 300 square miles, and on the rare occasion it does meet up with another cougar, it isn't likely to fight over its territory--much less go the distance to cross the finish line or slam dunk the winning two points for your team.