Rare Earth Metals Production: Possible Political Implications for National Security

Examples of rare earth elements application. Source: J.A. Green & Company. Reprinting of this graphic is given through written permission only; please contact info@jagreenco.com for additional information.

Rare earth elements are essential for many weapons the U.S. and other western countries use; limited supplies could cause national security problems.

Pages: 1 2

Radon in Granite Countertops: Is It Dangerous?

Your granite countertops are probably emitting radon, but the levels are low and generally not dangerous. Image by Tel Asiado

Are you worried about radioactive granite countertops? Gorgeous kitchen counters often do radiate radon, but the levels are low and probably not hazardous.

Graphene-based Materials for Solar Cell Applications

WS2 has a bandgap in the visible region. Photo by Clara Piccirillo.

Researchers have developed a new solar energy device, made of graphene and the semiconductor, tungsten disulfide, which shows very good photovoltaic efficiency.

Pages: 1 2

The Chemistry of Fireworks

What elements go into your favorite fireworks? Firework image by JosephHart

Interested in pyrotechnics? The beautiful colors and effects of fireworks are due to the chemical reactions between elements, heat and oxygen.

Ammonia: The Chemical at the Center of Texas Fertilizer Plant Explosion

The ammonia molecule contains one atom of nitrogen and 3 atoms of hydrogen. Image by Benjah-bmm27

What is anhydrous ammonia – and why did the chemicals involved make the Texas fertilizer plant explosion as bad as it was?