This graphic was updated on Feb. 11, 2020, to clarify the plot of density versus temperature for water and ice. Originally, the plot depicted density versus temperature for liquid water at all ...

Two weeks from this issue's publication date, the hour of sleep we lose to daylight savings will leave many of us feeling a little groggy or a bit behind schedule. Going to bed early a few days before ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

The iconic chart of elements has served chemistry well for 150 years. But it’s not the only option out there, and scientists are pushing its limits. By Siobhan Roberts When Sir Martyn Poliakoff, a ...

Physicists develop a 'nuclear periodic table'. While the traditional table is based on the behavior of electrons in an atom, this new table is based on the protons in the nucleus. Protons have ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

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 ...

More than a thousand different versions of the periodic table have been created since Dmitri Mendeleev drew the first 150 years ago – but why is one version more familiar to us than practically every ...

As the 150th anniversary of the formulation of the Periodic Table of Chemical Elements looms, a professor probes the table's limits. In 2016, four new elements were added to it: nihonium, moscovium, ...