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Cloning and Ethics

Cloning technology today is far from perfect: it requires many attempts and only 1%, if any, of the cloned eggs become embryos and then survive. For example, the first cloned sheep, Dolly, was successful after 277 attempts. That means that with the current technology, cloning a human being would require the death of many embryos - a moral issue not ...

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CloningandEthics
Geology

Heading For The Badlands

The bizarre landforms called badlands are, despite the uninviting name, a masterpiece of water and wind sculpture. They are near deserts of a special kind, where rain is infrequent, the bare rocks are ... Continue reading

HeadingForTheBadlands
Biology

Flu Pandemics in the 20th Century

If a flu virus emerges that is either new or that has not circulated in many years, and if it is able to spread easily from person to person, it could quickly travel around the world and cause serious ... Continue reading

FluPandemics
Engineering

Dress Sizes The Scientific Way

In pre-industrial America, most clothing was crafted at home or by professional tailors or dressmakers from individual measurements taken of each customer. In the early Twentieth Century, the growing ... Continue reading

DressSizesTheScientificWay
Biology

Regeneration 101

So who is the greatest regeneration superhero of all? Among vertebrates the lowly salamander is the champion 'comeback kid.' We humans are pitiful by comparison. We can often regrow the tip of a ... Continue reading

Regeneration101

The Gingerbread Man

TheGingerbreadManDid you know that gingerbread came about because of a smut disease of wheat?

Stinking smut is a disease that replaces the wheat grain with a black powder of spores that has a strong fishy odor. Flour ground from smut-contaminated wheat, although not poisonous, has a gray color and an unpleasant fishy flavor. Many years ago a baker in Europe had a supply of flour ground from smutted wheat and people would not buy bread made from this flour. Rather than discard this tainted flour and suffer a financial loss, the baker added molasses to the dough to mask the dark color and ginger to cover the fishy flavor. So, according to some authorities, gingerbread was created.

The smuts are a large group of plant diseases caused by a family of fungi related to the rust fungi (Basidiomycetes). Among the most important are the smuts attacking various cereal grains such as wheat, rice, and corn. The stinking smuts attacking wheat replace the grain with dark smut balls containing the fungus spores. These smuts are also called bunts, a name that comes from the charred, or burned, appearance of the kernels. The fish oil odor comes from a flammable chemical in the smut spores and explosions often occurred in threshing machines harvesting smutted wheat, as well as in storage bins where sparks from machinery ignited the spore masses.