As the clocks go forward this spring, see if you can solve these puzzles based on ancient calendars. When the clocks change for Daylight Saving Time, it can often involve a bit more mental ...

Zand's 'Ingenious Clocks,' which the Houston Symphony debuts this weekend, salutes little-known 12th-century scholar ...

Researchers at Weill Cornell Medicine and the epigenetics startup TruDiagnostic have found DNA markers linked to retroelements—remaining pieces of ancient viral genetic material—in human genes.