Drones provide wi-fi for disaster relief

submitted by: nsf
At the Smart America Expo, Yan Wan from the University of North Texas exhibited unmanned aerial vehicles (UAVs) she developed that are capable of providing wireless communications to storm-ravaged areas where telephone access might be out. Typical wireless communications have a range limit of only a hundred meters. However using technology developed by Wan and her colleagues, they were able to extend the Wi-Fi reach of drones to five kilometers. In a grant from NSF, Wan is applying...

Perception of Danger in Tornado Alley

submitted by: nsf
Could lightening really strike twice? It often does in Tornado Alley, where storms wreak havoc and crush entire communities in minutes. But do people see it that way? After the 2006 Iowa City tornado, psychologist Jerry Suls and colleagues at the University of Iowa explored how Iowa City's residents perceived the risk of being hit by tornadoes in the future—perceptions that could have implications for disaster preparedness and response. Credit: Produced by Amina Khan, National Science...

Science Nation - Unraveling the Mysteries of Tornadoes

submitted by: nsf
Greg Carbin knows a lot about severe weather. He's a meteorologist at the storm prediction center, located just south of Oklahoma City in Norman, Okla. In a quiet room on the second floor of the National Weather Service building, meteorologists are standing guard twenty-four hours a day, seven days a week, keeping an eye on weather systems that could unleash violent storms and tornadoes. The meteorologists issue storm watches as needed. For this and more Science Nation, go to...

Tornadoes in a bottle How- To

submitted by: teachertaylor2000

This is a video about how to make a really cool science toy- tornado in a bottle. They are sold in stores but you can make your own for free and its way cooler!