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219: "Disc Harrows"

Interesting Things with JC #219: "Disc Harrows" are farming implements, or tools, used to prepare the soil for planting or sowing crops. They are pulled behind tractors and break up the clods and surface crusts on your land. This helps improve soil granulation and weed destruction. While plowing cuts, granulates, and inverts the soil, creating furrows and ridges, disking breaks up those clods and surface crusts. Let's find out more!

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Podcast, Science, History JC Podcast, Science, History JC

218: “Elephants”

Interesting Things with JC #218: “Elephants” - The word “elephant” comes from the Greek word “elephas” which means “ivory”. The elephant brain is remarkably similar to the human brain, with as many neurons and synapses, as well as a highly developed hippocampus and cerebral cortex. There is a movement called the wooly mammoth revival that seeks to bring the species back to life through the genes of the Asian elephant.

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217: "Spring Equinox"

Interesting Things with JC #217: "Spring Equinox" - On the vernal equinox, the first day of spring, the direct rays of the Sun are shining down on the equator producing the effect of equal day and night. After the vernal equinox, the direct rays of the Sun migrate north of the Equator, as the earth slowly tilts.

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209 - Interesting Things: Daylight Savings & William Willet

Countries to the north and south of the tropics, see sunrise much earlier and sunsets much later in summer, than these regions do in winter. On most farms, this isn't a problem. People and animals just shift their habits as the hours of daylight shift. In most cities, the amount of energy used to make artificial light and heat becomes costly, if they don't shift their routines. This is where William Willett, the godfather of Daylight Savings comes in.

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Podcast, Science, History JC Podcast, Science, History JC

201 - Interesting Things: Lead Glass

Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical glass. In past decades, it was a popular material used to create decorative vases and bowls as well as crystal glasses and decanters. Lead glass is also known as X-ray glass or radiation shielding glass as one of its major applications is in the absorbance of high energy radiation while maintaining optical transparency. Also, lead glass has a lower thermal conductivity than lead-free glass. Interestingly, even though stained glass windows are a type of leaded glass, industry experts often use them separately to create distinction between the two.

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192 - Interesting Things: Color Perception

It's the surface of an object that reflects some colors and absorbs all the others. We perceive only the reflected colors. Perceived color depends on how an object absorbs and reflects wavelengths. Human beings can only see a small portion of the electromagnetic spectrum, from about 400 nm to 700 nm, but it’s enough to allow us to see millions of colors!

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183 - Interesting Things: Nicolaus Copernicus

Nicolaus Copernicus was a 16th century Renaissance-era world famous Polish astronomer, who proposed that the Sun is the center of the solar system and that the planets circle the Sun. Copernicus also noted that Earth turns once daily on its own axis and that very slow long-term changes in the direction of this axis account for the precession of the equinoxes.

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176 Interesting Things - PEANUTS...are not Nuts?!

The peanut is a member of the bean or legume family and not a nut, studies suggest that people who eat peanuts or tree nuts frequently have lower rates of heart disease compared with people who don't eat them. While almonds grow on trees, they're actually not a nut either... They're a seed found inside the almond fruit!... But that's an interesting story for another time.

Please visit peanut-institute.com for more information on this amazing bean!!!

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168 Interesting Things - STS-107 Space Shuttle Columbia

STS-107 was the disastrous 113th flight of the Space Shuttle program, and the 28th and final flight of Space Shuttle Columbia. The mission launched from Kennedy Space Center in Florida on 16 January 2003 and during its 15 days, 22 hours, 20 minutes, 32 seconds in orbit.

On February 1st, Columbia began re-entry as planned, but the heat shield was compromised due to damage sustained during the initial ascent. The heat of re-entry was free to spread into the damaged portion of the orbiter, ultimately causing its disintegration and the loss of all on board.

Columbia was delivered to the Kennedy Space Center in March 1979. Two years later, April 12, 1981, it lifted off from the Kennedy Space Center to become the first shuttle to fly in orbit.

The crew of its final voyage were 3 Mission Specialists; David Brown, Kalpana Chawla, Laurel Clark, a Payload Specialist and Commander; Ilan Ramon and Michael Anderson, Shuttle Commander; Rick Husband, and Shuttle Pilot; William McCool.

Arlington National Cemetery is the home of a Columbia memorial which is dated and has an outline of a Shuttle.

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