A major American study has confirmed what Irish students have long suspected – hotter weather negatively affects exam performance. Researchers at sev(...)

Former president Bill Clinton walks on stage at a Clinton Global Initiative event in New York in  2010. The Clinton Foundation become an Achilles’ heel for Hillary’s presidential campaign. Photograph: Doug Mills/The New York Times

In April 2009, Doug Band, a long-serving aide to former American president Bill Clinton, emailed Huma Abedin and Cheryl Mills, two senior staff member(...)

Brothers  Brahim El Bakraoui (left) and Khalid El Bakraoui, identified as two of the suicide bombers in the Brussels attacks. Experts warned that extremists were trying to recruit entire families in Europe, portending the possibility of yet another evolution in jihadism. Photograph: EPA/Interpol

The identification of Khalid and Ibrahim El Bakraoui as suicide bombers in the deadly Brussels attacks is confronting investigators and counterterror(...)