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Diadromous Fish

Diadromous fish are fish that migrate between freshwater and saltwater. The migration patterns differ for each species and have seasonal and lifecycle variations. Only one percent of all fish in the world are diadromous. Some diadromous fish migrate great distances, while others migrate much shorter distances. In either case, these fish undergo ...

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DiadromousFish
Geology

All That Glitters

Gold is called a 'noble' metal because it does not oxidize under ordinary conditions. Its chemical symbol Au is derived from the Latin word 'aurum.' In pure form gold has a metallic luster and is sun ... Continue reading

AllThatGlitters
Astronomy

Does The Sun Go A Bit Wobbly?

Our Sun may seem an enduring, unwavering beacon in the sky, but in truth it has a 'heartbeat' of sorts--a pulsation between dimmer and brighter phases so slow that it only 'beats' 9 times each ... Continue reading

WobblySun
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
Geology

Flipping Magnetic Fields

North and south. We take these directions for granted. Pull out a compass and the needle will swing to the north in response to the magnetism in the Earth's crust. The magnetic poles roughly coincide ... Continue reading

FlippingMagneticFields

Are Mushrooms Plants?

AreMushroomsPlantsMushrooms are classified under the Kingdom Fungi, whereas plants are in the Kingdom Plantae. So, how are mushrooms so different from plants? They both grow in the soil and are not animals, but that is the only similarity between the two. The color, way they obtain food and their method of reproduction are very different.

Plants are green because they contain chlorophyll, which helps them with photosynthesis, the process of turning sunlight into food. Mushrooms are not green and they contain no chlorophyll; therefore, they cannot photosynthesize. Mushrooms obtain their food by metabolizing dead or decaying organic matter, such as dead plants on the ground. Tiny filaments called hyphae absorb the nutrients from the dead matter. Mushrooms are made up of hyphae filaments and a mass of hyphae is called a mycelium. This is why you often see mushrooms growing on dead tree stumps.

Plants reproduce by making seeds, like the sunflower does. Mushrooms reproduce by producing spores. Thousands of microscopic spores are right underneath the cap, or top part, of the mushroom. They are located in the gills, which are the lines you can see underneath the cap. The stalk part of the mushroom holds all the nutrients needed to produce spores.