As the American president prepares to visit Saudi Arabia, Qatar and the United Arab Emirates, he sometimes seems to be dominating the global agenda as fully as he dominates the political scene at home. The announcement of a partial and preliminary agreement with China on tariffs allows Mr. Trump to claim that his trade policies are bringing others to the negotiating table.

Obsessive compulsive disorder has many unknowns, including what causes it, why symptoms can differ so much between people, how medication and therapy for it actually work, and why treatment is effective for some people and not for others. In our newly published research, my colleagues and I made a step toward unraveling some of these mysteries by shedding light on the genetics of OCD.

Santa J. Ono explains why he’s pursuing the University of Florida presidency.

The U.S. needs a national plan to compete with China for dominance of the next generation of world-changing technology, and the education sector needs different degrees of oversight and objectives than commercial AI.