With economic inequality at an all-time high, some U.S. presidential candidates are proposing dramatic shifts to the U.S. tax code. How have similar plans worked elsewhere in the world?

Though President Trump withdrew from the TPP, the remaining members of the trade pact have forged ahead with a new version, leaving the U.S. role in the Asia-Pacific in question.

U.S. space exploration inspired a generation of students and innovators, but NASA’s role has diminished, and the number of global space competitors is growing.