Every field of science has its favorite anniversary. For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of ...

Scientists think an asteroid could contain previously unknown elements. Asteroid 33 Polyhymnia appears to be denser than the densest element in the Periodic Table. The densest naturally occurring ...

The International Union of Pure and Applied Chemistry Joint Working Party has announced the official names and symbols of the chemical elements formerly known as 113, 115, 117 and 118. The proposed ...

One hundred fifty years after Russian chemist Dmitri Mendeleev published his system for neatly arranging the elements, the periodic table it gave birth to hangs in every chemistry classroom in the ...

Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. These new elements have high atomic ...

Unlike other rare earth elements, only minute quantities of synthetic promethium are available because it has no stable isotopes. For this study, the ORNL team produced the isotope promethium-147, ...

Carolyn Krause presents Jim Roberto’s story about how element 117 named tennessine was discovered and what he thinks are the prospects of, and obstacles to, creating elements 119 and 120 and even ...

A pinch of arsenic, a dash of krypton, a soupçon of tantalum, and a whole load of copper—these are just some of the 76 chemical elements that go into making modern automobiles, according to an ...

You may have noticed that the rock formations are very different colors. The rock formations on the left are from Red Rock State Park in Texas, and on the right is El Capitan Mountain in Yosemite ...