The mysterious odor that blanketed coastal suburbs of Athens and Piraeus three days ago remains unexplained, with authorities and researchers unable to identify its source.

Nearly 48 hours after a strong odor spread across Athens’ southern suburbs and reached parts of the city center, authorities still had not provided an official explanation for its…

The mysterious odor that blanketed coastal suburbs of Athens and Piraeus three days ago remains unexplained, with authorities and researchers unable to identify its source.