Michelle Obama gave a heart-wrenching speech about Hadiya Pendleton, a Chicago teenager who was fatally shot earlier this year, urging community leaders to fight gun violence.

The first lady, who was the featured speaker at a luncheon held to raise money for at-risk youth, spoke about her meeting with the slain teenager's classmates.

"It is hard to know what to say to a roomful of teenagers that are about to bury their best friend," she said.     "But I started by telling them that Hadiya Pendleton was clearly on her way to do something truly worthy with her life. I told them that there is a reason that we're here on this earth. That each of us has a mission in this world and I urged them to use their lives to give meaning to Hadiya's life."

Watch the full speech (below):

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31 year old Zack Vawter climbed 103 flights of stairs to reach of Chicago's Willis Tower with a bionic leg.

The mind controlled leg was introduced to 2005 at the Rehabilitation Institute of Chicago.

Vawter's leg may cost $8 million, but it seems like its' worth the price.

"I have to take every step with my good foot first and sort of lift or drag the prosthetic leg up. With the bionic leg, it's simple, I take stairs like I used to, and can even take two at a time," he said.

Vawter climbed the tower in 53 minutes and 9 seconds on Sunday.

(Source)