A French doctoral student detained in Tunisia returned to Paris on Friday after weeks of top-level diplomatic discussions.

Nor French authorities nor Tunisian officials have commented on the reason for his arrest. NGOs have repeatedly denounced a ...

Victor Dupont, a 27-year-old French PhD student, was detained in Tunisia for 27 days, raising diplomatic tensions. His arrest ...

Researchers at New York University have devised a mathematical approach to predict the structures of crystals—a critical step in developing many medicines and electronic devices—in a matter of ...