Next stop, Mars? Well, not quite, but a new estimate puts the price tag for a potential manned mission to Mars at a much easier-to-stomach $80 billion to $100 billion. That's a far cry from the oft-repeated–and absurd–cost of $1 trillion.
The GOP’s Border War Donald Trump and Jeb Bush are polar opposites on immigration. Where on the spectrum will the GOP fall?
Texas Is Debuting Textbooks That Downplay Jim Crow and Frame Slavery as a Side Issue in the Civil War
A U.S.-Japan Robot Duel Is Coming. Time to Rewatch a Great Transnational Bot-Battle Movie.