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Introduction to Constellations

'Constellation' is the name we give to seeming patterns of starsin the night sky. 'Stella' is the Latin word for star and a constellation is a grouping of stars. In general, the stars in these groups are not actually close to each other in space, they just appear to be close when viewed from Earth. If we could travel by spaceship to another part of ...

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IntroductiontoConstellations
Biology

Can You Drink Too Much Water?

Body fluids account for over 70% of an average adult's body. Our body fluids are composed of water and substances called electrolytes. Dissolved in water, these materials develop tiny electrical ... Continue reading

TooMuchWater
Engineering

A Man-made 'Take' on Nature's Style

Advanced Composite Materials, (ACMs) are, as the name implies, composite materials. However, they consist exclusively of man-made specialty fibers bound in a matrix of plastics. The variety of such ... Continue reading

ACMNature
Astronomy

Exploring The 'Red Planet'

The planet Mars, sometimes called the 'Red Planet', has been an object of study for many centuries. The distinctive reddish color of the planet led some cultures to associate Mars with bloodshed and ... Continue reading

ExploringTheRedPlanet
Astronomy

Ancient Planet

Long before our Sun and Earth ever existed, a Jupiter-sized planet formed around a sun-like star. Now, almost 13 billion years later, NASA's Hubble Space Telescope has precisely measured the mass of ... Continue reading

AncientPlanet

Giant Cloned Monster Loose In Mediterranean Sea

CaulerpaNative Caulerpa taxifolia is found in and around the waters of Florida and the Caribbean. It is a smallish, yet hardy saltwater plant that grows rapidly and is ideal for use in aquariums with diverse conditions. It does, though, require consistent light and warm temperatures to flourish. In other words, it occupies an ecological niche. The Stuttgart Aquarium in Germany tried to improve on Mother Nature and succeeded in developing a hardier variety. Apparently, they were pleased with the result. Their cloned version, however, little-resembled the native species. It was Caulerpa-on-steroids, fast growing and even hardier, comfortable both in warm and cold water, and in low-light environments. Rather than the diminutive native plant, this monster grew tall and strong. C. taxifolia proved so popular that it was soon found in public aquariums in France and Monaco. By 1984, it was a popular specimen in home aquariums. Better living through science.

Sometime around 1984, a small amount of our killer algae escaped from the Oceanographic Museum of Monaco into the Mediterranean Sea. Scientists estimated this original patch to be about a square yard. The patch liked its new home so much it grew and grew and grew. By 1989 it had blanketed over 2 square acres (.8 ha) of the sea floor. If this weren't bad enough, Caulerpa taxifolia was not a nice neighbor. It choked out native plants in its path, and altered fish populations as it rippled through the ecosystem. Fish that ate fish that ate plants, and so on. It impacted coastal towns, the fishing industry, tourism and much more. Talk about lack of diversity. Today, that little patch in the Mediterranean Sea covers over 14,000 acres (about 57 km) in a jungle of 10-foot (3 m) deep algae. It is clearly a man-made ecological disaster.