6:29 p.m. ET: ABC's David Wright tweeted:

Credit: @abcdavid/Twitter

3:41 p.m. ET: Spencer West, a 31-year-old who was born with a genetic disorder called sacral agenesis and eventually had his legs removed, climbed to the top of Mount Kilimanjaro on his hands.

Read ABC's Nick Schifrin's report on this incredible story HERE.

2:28 p.m. ET: Twitter returns!

The social website went down around 11:50 a.m. ET, bringing users' streams to a screeching halt and causing several reporters to suffer from twitching fingers.

ABC News' Joanna Stern has the details HERE.

12:49 p.m. ET: SANDUSKY TRIAL, ABC's Jim Avila reports: Jerry Sandusky, his lawyer told a jury today, was "slammed" by accusers who are out for money and investigators who pressured witnesses into making false claims, despite years of helping children without anyone complaining of inappropriate behavior.

The jury of seven women and five men will begin deliberating Sandusky's guilt or innocence this afternoon after the prosecution completes its closing argument. If convicted of 48 counts of sex abuse against 10 boys, the former Penn State football coach, who is 68, could be sentenced to life in prison.

Check back HERE for the latest updates in the case.

Credit: Mark Wilson/Getty Images

11:56 a.m. ET: Unintentionally, pro-athletes have become the guinea pigs, some would say, in testing cutting-edge and experimental therapies for chronic pain.

ABC's Ron Claiborne reports on a controversial new blood injection treatment virtually unknown in the United States and not approved by the FDA. It's called Regenokine therapy, and Kobe Bryant, Tracy McGrady and other star athletes have used it to help with chronic pain.

Read more HERE.

Tracy McGrady of the Atlanta Hawks. Credit: Paul Bereswill/Getty Images

11:05 a.m. ET: It's official, but it's a non-event. Tropical Storm Chris was upgraded to a Category 1 Hurricane Thursday, becoming first hurricane of the season, the National Hurricane Center announced. However, the storm is far out in the middle of the Atlantic and poses no threat to land, the center said.

9:41 a.m. ET: Blast from the past:

CBS/Getty Images

American actress Lisa Hartman and American actor Alec Baldwin pose in a publicity portrait for the TV soap opera series 'Knots Landing,' in 1985. Baldwin appeared in 40 episodes during two seasons on the show.

Baldwin has been back in the news recently because of another outburst, this time with an NY Post photographer.