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Bioenergy Basics

Biomass (organic matter) can be used to provide heat, make fuels, and generate electricity. This is called bioenergy. Wood, the largest source of bioenergy, has been used to provide heat for thousands of years. But there are many other types of biomass--such as wood, plants, residue from agriculture or forestry, and the organic component of ...

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BioenergyBasics
Geology

The World's Biggest Popsicle

Stored in a commercial freezer in France, along with quite a lot of frozen meat and cheese, is about 15 kilometers' worth of ice cores, taken from glaciers in Greenland and Antarctica. Each giant ... Continue reading

TheWorldsBiggestPopsicle
Physics

Kinetic Theory of Gases

Air is a gas, and gases can be studied by considering the small scale action of individual molecules or by considering the large scale action of the gas as a whole. We can directly measure, or sense, ... Continue reading

KineticTheoryofGases
Biology

The Science of Tears

When was the last time you had a good cry? Shedding tears may be healthier than you thought, and the secret lies in the chemical composition of tears. ... Continue reading

ScienceOfTears
Physics

Newton's Three Laws of Motion

The motion of an aircraft through the air can be explained and described by physical principals discovered over 300 years ago by Sir Isaac Newton. Newton worked in many areas of mathematics and ... Continue reading

NewtonsThreeLawsofMotion

Fibonacci Patterns In Nature?

FibonacciOften it takes a second look to see how mathematical numbers and patterns fit into the natural world. Numbers, after all, are manmade. However some very interesting number patterns underlie some natural systems in a surprising way. One such number pattern is called the Fibonacci Series, where each subsequent number is the sum of the two preceding numbers. For example 0, 1, 1, 2, 3, 5, 8, 13, 21... The next in the series is 13 + 21 = 34, and so on.

The trick with mathematical patterns is to see them in the first place, and it wasn't until the 13th century that Leonard Fibonacci, of Pisa, Italy, first described this series in a book on calculations. Since that time, scientists have found the Fibonacci Series in many different places. In the plant kingdom petals on flowers and leaves on stems are often arranged in groups of 3s, 5s and 8s. Pine cones, too, show the same series. In the animal kingdom, the spirals of seashells can be found following the series, as can genealogical patterns of honey bees.