Tai chi may slow Parkinson's symptoms for years, study finds

Estimated $1.73 billion Powerball jackpot up for grabs during Wednesday night's drawing

$1.55 billion Powerball Jackpot is up for grabs in Monday night's drawing

No jackpot winner in Saturday's Powerball drawing, historic prize has now grown to an estimated $1.55 billion

Powerball jackpot rises to an estimated $1.4 billion for tonight's drawing

Powerball jackpot soars to an estimated $1.4 billion for Saturday's drawing

Powerball jackpot winning numbers announced for the estimated $1.2 billion prize. Here are your odds -- and what you could buy

Powerball jackpot climbs to an estimated $1.20 billion for Wednesday's drawing

Feeling lucky? A $1.04 billion Powerball jackpot is up for grabs in tonight's drawing

Powerball jackpot skyrockets to massive $1.04 billion after no winner Saturday

Powerball jackpot grows to $725 million after no winning ticket Wednesday

A woman depicted in a drawing by the BTK serial killer has possibly been identified, sheriff says