isotope

One of the most important moments in Earth's life was the Cambrian explosion of life, about 540 million years ago, when complex and multicellular life forms appeared throughout the

Today, pedestrians visiting the Kilauea Iki crater in Hawaii only see an almost flat surface with sparse basalt. It looked like asphalt, but in November and December 1959, it

In 2011, there will be a change in atomic mass of 10 chemical elements in the Periodic Classification of Chemical Elements. For the first time in history, atomic mass ...