First Cabinet Member to Be Fired; Trump to Nominate Oklahoma Senator President Trump said Kristi Noem would move into a previously nonexistent security role. He has named Senator Markwayne Mullin as ...

Nicholas Kristof, an Opinion columnist, joins us in March to talk to teenagers all about opinion writing. Post your comments and questions by March 15. By The Learning Network More preteen athletes ...

Explore a wide range of recent research in mathematics. From mathematical modeling to why some people have difficulty learning math, read all the math-related news here.