. >> good evening, i'm lourdes duarte. micah is off tonight. >> i'm mark suppelsa. in just an hour, right here on wgn and wgn america, the winning mega millions numbers will be drawn for the biggest jackpot of all time. we are counting it down tonight on the mega clock. wgn's gaynor hall is live on the north side.. at a seven eleven today. gaynor .. are they selling tickets, or has that window closed now? they are still selling tickets up to 945. it has been a busy day with lots of people coming in all open to turn $1 and to $640 million. the cash is big and so are the dreams. produce my musical. >> buy a couple cars, help some family out. >> i'm just gonna save the world...yeah. its a record mega millions jackpot,tonight. 640 million dollars. the odds of winning? miniscule. one in 176 million! >> the cubs are more likely to win their first 27 games of the year than you are to win with one ticket. youre more likely to pick every winning president till the year 2116. who cares about the odds when you 've got luck on your side. this is the wgn mega millions pool. >> b