Updated: 6:55 PM A viewer asks, “What’s the difference between a non-3G network, 3G and 4G networks? Is one really better? And is one service better than another?” Good question.

Updated: 6:54 PM A new program known as “Cash for Clunkers” offers up to a $4,500 rebate toward a new car for those who trade in their older vehicles for a more fuel-efficient variety. How do you know if your car qualifies? Good question.

Updated: 6:46 PM A viewer asks, “Is Congress considering repealing the 22nd Amendment?” Good question.

Updated: 6:50 PM A viewer asks, “How did the running of the bulls begin? Why do they do it?” Good question.

Updated: 8:09 PM Tonight on good question, another e-mail is making the rounds that has many asking, “Is it real?”

Updated: 8:00 PM Tonight on Good Question, who started the tradition of celebrating the Fourth of July with fireworks?

Updated: 1:51 PM Tonight on Good Question, a viewer asks, “When I was a child, I always enjoyed seeing the caboose at the end of the train. Why is the caboose no longer used?” Good question.

Updated: 6:53 PM Summer approaches and people everywhere are firing up their grills. Why do we love to BBQ so much? Who invented the modern grill? Gas or charcoal? All good questions.

Updated: 8:11 PM As Memorial Day approaches, one viewer has a question about the U.S. flag. “Is it against the law for a civilian to salute the U.S. flag?” Good question.

Updated: 6:50 PM Sue Neal of Wichita wants to know more about curb-side solicitation. “Are permits required to ask for money at Wichita intersections, and are there any restrictions?” Good question.

Updated: 7:41 PM KAKE has received a lot of emails from Pontiac owners asking, “What will happen to my warranty, parts and resale value once Pontiac bites the dust?” Good question.

Updated: 7:41 PM A KAKE viewer wants to know, “Who says Xavier Henry is the top recruit? How is that determined?” Good question.

Updated: 8:35 PM A recent email making the rounds claims there’s an amazing 9/11 memorial in New Jersey that was given to the United States by Russia.

Updated: 7:43 PM Donna asks, “Why does the patch of the American flag look reversed on a military uniform?” Good question.

Updated: 7:31 PM Mary from Norwich wants to know, “What causes washboard roads?” Good question.

Updated: 8:21 PM A viewer wants to know, “How did the Spring Break tradition begin?” Good question.

Updated: 6:58 PM The Lewis family wants to know, “If the power goes out in Sedgwick County, will the tornado sirens still work?” Good question.

Updated: 7:01 PM A viewer asks, “Is yawning really contagious?” Good question.

Updated: 7:32 PM A viewer wants to know, “If you are born on an airplane, where is your official place of birth?” Good question.

Updated: 6:59 PM A viewer asks, “I hear people talking about it, but what is Twitter?” Good question.

Updated: 7:43 PM A viewer wants to know, “Just exactly how much money is a trillion dollars? I can’t imagine that amount of cash.” Good question.

Updated: 7:11 PM Pete Hein uses a portable television to follow severe weather when the power goes out. He wants to know if there are portable digital TVs for after the digital transition. Good question.

Updated: 8:09 PM Gary wants to know more about the spire installed on Wichita's Downtown Arena. "What's so great about it?" Good question.

Updated: 7:57 PM One viewer, Tim, wants to know, "News people keep saying 'Ponzi scheme'. What exactly is a Ponzi scheme?" Good question.

Updated: 7:14 PM A viewer asks, "What happens to all the old TVs that aren't converted? Are they just going to be thrown away and fill up the landfills?" Good question.