Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Scientists have carried out ground-breaking experiments to investigate the atomic structure of astatine (atomic number 85), the rarest naturally occurring element on Earth. Through experiments ...

In a significant breakthrough for the scientific community, a new element has been confirmed on the periodic table. This discovery holds potential implications for a wide range of scientific fields, ...

A fundamental property of the rarest element on Earth, astatine, has been discovered for the first time, scientists say. Astatine occurs naturally; however, scientists estimate much less than an ounce ...

Rarer than any metal, any mineral, so rare that if you scan the entire earth, all six million billion billion kilos or 13,000,000,000,000,000,000,000,000 pounds of our planet, you would find only one ...

For now, they're known by working names, like ununseptium and ununtrium — two of the four new chemical elements whose discovery has been officially verified. The elements with atomic numbers 113, 115, ...