The bat'leth has become synonymous with Klingons, but the iconic weapon didn't debut until Star Trek: The Next Generation's ...

David A.M. Wilensky's annual roundup of new Passover haggadahs — ranging this year from those written to enlighten to one ...

Also: testing the efficacy of WWI “dazzle” camouflage; how the male blue-lined octopus survives deadly mating ritual.