Backers claim the tests can predict a child’s risk of autism using a strand of hair or a mother’s blood, but critics say they are not ready for the market.

Billed as “the highest priority,” superseding “any other instructions” Grok may receive, these rules explicitly prohibit Grok ...

Health Tests How well are you juggling the pillars of good health, including sleep, diet, exercise, relationships and stress management? Check in with yourself today! Each quiz contains 20 questions ...