CHICAGO, Sept 22 (Reuters) - Chicago Mayor Rahm Emanuel unveiled an expanded student mentorship program on Thursday with the aim of keeping at-risk youth off the streets and away from gangs in a city that is struggling against a wave of violence.

(Reuters) - A gunman opened fire at a manufacturing plant in eastern Tennessee on Thursday, killing two people before taking his own life, police and local media reported.

CAMBRIDGE, Mass. (Reuters) - Scientific research into how polyester pants affect the sex life of rats, what it's like for a human to live like a badger and how different the world looks when viewed through your legs was honored at this year's Ig Nobel spoof awards.

WINSTON-SALEM, N.C., Sept 22 (Reuters) - A black man killed by a Charlotte, North Carolina, police officer this week did not aggressively approach officers and had his hands by his side when he was shot, a lawyer said on Thursday after the man's family watched two police videos of the incident.

TULSA, Okla. (Reuters) - The white Tulsa police officer who fatally shot an unarmed black man whose car had broken down and blocked a road was charged with first degree manslaughter on Thursday and a warrant has been issued for her arrest.

HANAM, South Korea (Reuters) - South Korea's Hyundai Motor <005380.KS> will launch its standalone premium auto brand Genesis in China within two to three years, betting on a luxury lane to profit as competition bites at the lower end of the world's biggest auto market.

(Reuters) - Yahoo Inc said on Thursday that at least 500 million of its accounts were hacked in 2014 by what it believed was a state-sponsored actor, a theft that appeared to be the world's biggest known cyber breach by far.

LONDON (Reuters) - JPMorgan retained its place at the top of the global investment bank rankings in the first half of this year despite a fall in revenues, while Deutsche Bank's troubles ensured the top five were all U.S. banks, new data on Friday showed.

NEW YORK (Reuters) - On Oct. 5, the U.S. Supreme Court will hear oral arguments on a question that has created considerable confusion in lower courts: When the government claims a corporate outsider has profited from trading illegally on inside information, what must it prove about the motive of the insider who supplied the tip?