The entrance to Arapahoe County District Court, Colorado. The trial for  a   cinema massacre in the state in 2012 is underway in the courthouse. Photograph: Evan Semon/Reuters

The long-awaited trial for a cinema massacre in Colorado is underway, with jurors asked to decide whether gunman James Holmes was insane when he kille(...)

Future CEO Eric Olsen of the new merged entity LafargeHolcim. Photograph: Arnd Wiegmann/Reuters

Holcim and Lafarge agreed to nominate Eric Olsen to lead their combined operation as they seek to overcome lingering opposition from some shareholders(...)

Demonstrators hold up a sign  reflecting the protester chant of ‘Don’t shoot’ during a rally in Ferguson, Missouri, over the killing earlier this month of teenager Michael Brown.  Despite the Brown family’s continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. Photograph: Scott Olson/Getty Images 1:06

Neglecting lessons of past civil disturbances such as the 1992 Rodney King riots in Los Angeles, police inflamed tensions that have fuelled more than(...)

The team of Belfast-based start-up DisplayNote: the company’s app allows the teacher to mirror what’s on their PC to more than 40 devices at the same time

The concept of bring your own device (BYOD) to school, and the interactive opportunities that connected devices in the classroom bring, is tran(...)

Boulder, Colorado, where the Great Plains meet the Rocky Mountains, is considered one of the best places to live in the US. Photograph: Doug Pensinger/Getty Images

The American city of Boulder, sitting where the Great Plains meet the Rocky Mountains, regularly features amongst the happiest, brainiest, healthiest,(...)

A psychiatrist at the University of Colorado was so concerned about James Holmes that she contacted campus police.

A month before James Holmes was accused of carrying out a mass shooting in a Colorado movie theater, his university psychiatrist reported that(...)