Question of gunman's motive haunts Las Vegas

Las Vegas shooting The question haunting Vegas / What was gunman's motive? Hospitals, journalists and officials played familiar roles as victims and heroes made headlines. But uncertainty still surrounds the man behind the violence Internet / YouTube alters search algorithm over fake conspiracy videos Site initially said clips claiming mass shooting was staged did not violate standards – but later corrected its stance headlines 'Walking down a dark path' / Joe Biden hammers Trump in scathing speech Receiving a prize from a foreign policy thinktank, the former vice-president did not mince words in describing a 'disturbing and dangerous' trend in Washington International Campaign to Abolish Nuclear Weapons wins Nobel peace prize Harvey Weinstein / Producer to take 'leave of absence' as sexual harassment claims surface 'Calm before the storm' / Trump set to walk away from Iran nuclear deal Hurricanes / Tropical Storm Nate kills 22 in Central America and heads for US NSA / Kaspersky Lab denies involvement in Russian hack of NSA contractor spotlight 'Our minds can be hijacked' / The tech insiders who fear a smartphone dystopia The Google, Apple and Facebook workers who helped make technology so addictive are disconnecting themselves from the internet. Paul Lewis reports on the Silicon Valley refuseniks who worry the race for human attention has created a world of perpetual distraction that could end in disaster 'Things you people wouldn't believe' / What Blade Runner 2049 can tell us about 2017 This reclusive life / What I learned about solitude from my time with hermits Anatomy of an artwork / Jasper Johns's Flag: a banner for patriotism or a cloak of oppression? To be sneezed at / Why can't we cure the common cold? Advertisement opinion Why Americans won't give up their guns Gary Younge Are those my words coming of out Steve Bannon's mouth? Thomas Frank Donald Trump's demonisation of Iran is dishonest and dangerous Michael Axworthy sports World Cup / Angst on overdrive as USA meet Panama with World Cup hopes in balance NFL / Patriots grind out narrow win over Buccaneers in Tampa Cam Newton / Sponsor drops star quarterback over 'sexist' remark to female reporter Guardian News & Media Limited - a member of Guardian Media Group PLC. Registered Office: Kings Place, 90 York Way, London, N1 9GU. Registered in England No. 908396