Archaeologists and scientists have dated ancient Egyptian iron objects to 3500 B.C. The Egyptian objects contained 8 percent nickel, suggesting that the iron came from a meteorite. The Hittites of Asia Minor began smelti... More » Science Chemistry Atoms & Molecules

Iron is found throughout the earth, comprising about 32 percent of the earth's crust and up to 80 percent of the Earth's core. It is the second most abundant metal on earth. More »

Iron can be found in the Earth's core, in the Earth's crust, in hemoglobin, in steel and in magnets. It is rare to find iron in its elemental form on Earth, but it has been found in igneous rocks in Russia. More »

In the Miller-Urey experiment of 1952, scientists Stanley Miller and Harold Urey discovered that amino acids had formed in the controlled environment they had created to chemically simulate early Earth. According to Duke... More » Science Chemistry Atoms & Molecules

Helium was first discovered on the sun before it was ever found on Earth. During a total solar eclipse in 1868, a French Astronomer, Pierre-Jules-Cesar Janssen, noticed a unique yellow line in the sun's wavelength spectr... More » Science Chemistry Atoms & Molecules

Iron is used to make a number of residential and industrial products, including bicycles, buildings, skyscrapers, bridges, automobiles, heavy carriers and aircraft. Iron is a strong and durable substance; it has a high t... More » Science Chemistry Atoms & Molecules

Three scientists independently discovered the element boron in 1808: Sir Humphrey Davy in London and Joseph Gay-Lussac and L. J. Thénard in Paris. Davy produced boron by combining potassium and boric acid in a chamber fi... More » Science Chemistry Atoms & Molecules