A careful review of threats leads the Bulletin's Science and Security Board to conclude that the risk of civilization-threatening technological catastrophe remains high, and that the hands of the Doomsday Clock should therefore remain at five minutes to midnight.

To beat back chikungunya, dengue, and yellow fever, human behavior has to change.

The Russia-US deal to eliminate Damascus’ stockpile has achieved a great deal—far more than the alternative would have accomplished