For millennia, people slept in two shifts – once in the evening, and once in the morning. But why? And how did the habit disappear?

The student and human-rights defender was stabbed in Popayán on September 17. Advocates want investigators to examine whether her identity, activism, or leadership were connected to her killing.

Kids who have their own smartphones at age 12 are more likely to develop eating disorder symptoms than their peers without the devices, according to a new study.

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Hi! My name is Hammam Al-Shanti.