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 ...

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

Getting ready with me while doing my makeup in alphabetical order. A fun and creative GRWM challenge that turns a normal makeup routine into a playful trend. #GRWM #MakeupChallenge #AlphabetChallenge ...

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.