From the Wires

Aerobic exercise helps aging brains grow

The Atlantic: A study showed that doing aerobic exercise twice a week for 26 weeks significantly increased the volume of the hippocampi in older women.

Windows XP is dead

NBC: Microsoft ended support for the popular operating system, Windows XP.

Stay-at-home moms on the rise

CNN Money: Today, 29% of American mothers are at home.

Game of Thrones crashes HBO app

CNN: A rush of viewers onto the cable network's mobile streaming app for the season premiere of "Game of Thrones" caused it to crash.

Oscar Pistorius apologizes

BBC: An emotional Oscar Pistorius has apologized to the family of girlfriend Reeva Steenkamp, on the first day of his evidence at his murder trial.

Mozilla CEO resigns

Business Insider: Brendan Eich is resigning as CEO and is leaving the board of Mozilla.

Liquid nicotine causing poisonings

CNN: In February there were 215 calls involving e-cigarettes to the poison center.

FDA approves overdose treatment

Reuters: The U.S. Food and Drug Administration approved an injection device for caregivers to treat patients who suffer an overdose.

Turkey officials lift 'Twitter ban'

BBC: Turkish authorities have lifted the two-week-old ban on Twitter, citing it was a breach of freedom and expression.

Supreme Court voids overall campaign donor caps

WSJ: In a 5-4 ruling, the majority believes limits violate the First Amendment.

Amazon launches $99 set-top box

Forbes: The company unveiled FireTV, a streaming set-top box that lets viewers watch on-demand movies and television shows.

7 servings of fruits, veggies reduces death risk

Forbes: Overwhelming evidence shows that consuming seven servings of fruits and vegetables per day considerably decreases one's death risk.

No sign of Russian troop pullout

BBC: Nato is not seeing a Russian troop pullout from the Ukraine border.