On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. He ...

Explore the periodic table! Discover the history and key facts about each element, including atomic number, mass, symbol, and the scientists who discovered them.

You probably studied the "regular" periodic table in school—but did you know there are more versions of the periodic table ...

Newly released files on Jeffrey Epstein have prompted the resignation of a top official in Slovakia and revived calls in Britain for a former prince to cooperate with authorities.

Circadian rhythms in mammals are regulated by a master circadian pacemaker located in the hypothalamic suprachiasmatic nucleus (SCN), which coordinates rhythmic processes throughout the organism.