The Alcubierre warp drive is an exotic solution in general relativity. It allows for superluminal travel at the cost of enormous amounts of matter with negative mass density. For this reason, the ...

The California State Board of Education voted to adopt a new—and much-debated—math framework on Wednesday, concluding a years-long process that involved three drafts, prompted hundreds of suggested ...

Colleges created remedial education classes to ensure students were sufficiently prepared for more advanced material. But increasingly, there’s a sense that remedial courses are hurting the prospects ...