The Saudis, Jordanians and Egyptians were involved in a civil war in Yemen. The Egyptian government executed Islamists charged with planning a theocratic takeover.

At Long Last, Mathematicians Have Found a Shape With a Pattern That Never Repeats Experts have searched for decades for a polygon that only makes non-repeating patterns. But no one knew it was ...

Mathematicians have discovered a single shape that can be used to cover a surface completely without ever creating a repeating pattern. The long-sought shape is surprisingly simple but has taken ...

In what seems like the start of the movie Contact, researchers report that mysterious fast radio bursts (FRBs) from space have been detected once again and that they're following a pattern. The ...

The burst — known as an FRB — appears to be transmitting signals that reach Earth in a repeating, 157-day pattern, the group said.

A 5000-year-old manuscript discovered in an Egyptian tomb is brimming with enigmatic messages. And experts believe the ancient civilisation was forecasting catastrophic events that could end ...

A new model shows how behavior and disease spread influence each other throughout the year, creating repeating patterns of outbreaks.

Scientists don't yet know why a mysterious object is transmitting signals to Earth in a repeating pattern from a galaxy 500 million light-years away.