QUES: Magnets are able to place a force on certain materials. This force is called a magnetic force. The force a magnet exerts is a little different from the forces you may normally think about. You exert a force on a book when you lift it. You also exert a force on the pedals of your bicycle. In both those cases, those forces cause a change. The change you see in both these cases is called motion. Magnets, too, can produce change. They can produce motion just like you do. Unlike you, magnets do not have to touch something to exert a force. A magnetic force is exerted over a distance. Thats right, a magnet can push or pull certain items without ever touching them. Thats how the maglev train works. Do you know another type of force that does not require objects to touch? These forces are known as non-contact forces. Another type of non-contact force you may be familiar with is gravity. Gravity too can cause changes in motion. Gravity holds our moon in orbit without touching it.
Do you have any questions?
MY QUESTION: Does a magnet have to be touching an object to assert push or pull?

QUES: Brad, Texas (CNN) -- Authorities were working on plans Friday for residents who were forced to flee a wildfire in northern Texas to return home, a day after firefighters made progress battling the blaze that destroyed dozens of homes. The blaze in Palo Pinto County scorched 6,200 acres by Thursday, according to the Texas Forest Service. The fire is burning near the resort of Possum Kingdom Lake, near the town of Brad, about 100 miles west of Dallas. "We feel much better about this fire today," as the blaze is now 50% contained, said John Nichols, a spokesman for the Forest Service. He said evacuations were lifted for some residents forced to evacuate the fire, which was driven by high temperatures and dry winds. The wildfire has destroyed 40 homes and nine RVs since it began Tuesday, the Forest Service said Thursday. Firefighters were receiving support from aerial tankers and helicopters. Authorities are mapping out plans to allow residents to return to their homes, said Palo Pinto County Sheriff Ira Mercer. Authorities also are trying to open the lake for the Labor Day holiday, he said. On Wednesday, evacuations were ordered in several communities on the north side of the lake after the fire charged over a ridge and approached a dam on the lake, CNN affiliate WFAA reported. The wildfire was moving so fast that the Forest Service pulled out of its command observation post, telling journalists and onlookers to get out of the way of the fire. "My house is right through here, though it may be gone," Tom Hardeston told WFAA as he watched the fire. Nearby ranchers battled to save their herds from the encroaching fire. "I'm just moving them from pasture to pasture," Cindi McCoy told WFAA, referring to her livestock. "As one pasture burns, I'm moving them back to that one and bring(ing) them back around."
Do you have any questions?
MY QUESTION: What is the present state of evacuations?

QUES: ATLANTA, Georgia (CNN) -- On a plot of soil, nestled against the backdrop of skyscrapers in downtown Atlanta, Georgia, a group of residents are turning a lack of access to fresh produce into a revival of old traditions and self-empowerment. Urban farming is a way for African-Americans to connect with the earth, says Cashawn Myers of HABESHA. HABESHA Gardens is one of many urban gardens sprouting up around the country. Fruits and vegetables are thriving in this community garden located in an economically depressed area of the city known as Mechanicsville. But the garden serves an even greater purpose. The harvest helps feed some of the neediest members of the neighborhood. "It's a reawakening going on. It's almost like it's a renaissance," says Cashawn Myers, director of HABESHA Inc. "There's a Ghanaian proverb that says Sankofa. Sankofa means return to your past so you can move forward. Even if you look at coming over here during our enslavement, we were brought here to cultivate the land because that's something we did on the continent. So really, that's what many of the people are doing now," he said. Myers believes urban farming is a way for many African-Americans to reconnect with their past. iReport.com: Show us your urban farm "They are going through a process of Sankofa and going to what they traditionally did, which is connect to the Earth so they can move forward and grow," he says. But HABESHA Gardens isn't unique. Former pro basketball player Will Allen, who is considered to be one of the nation's leading urban farmers and founder of Growing Power Inc., estimates that there are hundreds of thousands of urban gardens in inner cities across America. Urban farms help feed people, sustain neighorhoods " "It's beyond a movement at this point. Its more like a revolution," says Allen.
Do you have any questions?
MY QUESTION: Are urban farms common?

QUES: Tuesday, September 11, 2001, dawned temperate and nearly cloudless in the eastern United States. Millions of men and women readied themselves for work. Some made their way to the Twin Towers, the signature structures of the World Trade Center complex in New York City. Others went to Arlington, Virginia, to the Pentagon. Across the Potomac River, the United States Congress was back in session. At the other end of Pennsylvania Avenue, people began to line up for a White House tour. In Sarasota, Florida, President George W. Bush went for an early morning run. For those heading to an airport, weather conditions could not have been better for a safe and pleasant journey. Among the travelers were Mohamed Atta and Abdul Aziz al Omari, who arrived at the airport in Portland, Maine. Boston: American 11 and United 175. Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport. When he checked in for his flight to Boston, Atta was selected by a computerized prescreening system known as CAPPS (Computer Assisted Passenger Prescreening System), created to identify passengers who should be subject to special security measures. Under security rules in place at the time, the only consequence of Atta's selection by CAPPS was that his checked bags were held off the plane until it was confirmed that he had boarded the aircraft. This did not hinder Atta's plans. Atta and Omari arrived in Boston at 6:45. Seven minutes later, Atta apparently took a call from Marwan al Shehhi, a longtime colleague who was at another terminal at Logan Airport. They spoke for three minutes. It would be their final conversation.
Do you have any questions?
MY QUESTION:
Who did Atta talk to in Boston and for how long?