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The Bush administration is eliminating a respected fellowship program for graduate research in the environmental sciences, administration officials said this week. The fellowship provides $ 10 million a year to students pursuing graduate degrees in environmental science, policy and engineering, as part of an Environmental Protection Agency program called Science to Achieve Results, or STAR. […]

“Mom,you can’t die. I’m a late bloomer,” I pleaded at my mother’s bedside, as she lay dying of pancreatic/liver cancer. This couldn’t be happening! My beautiful,vibrant,effervescent, fifty-nine-year-old mother couldn’t be sick! It was all so unreal. Just two months ago she was fine,and yet now here she was,days from death. “Mom, you have to meet […]

My heart sank when I saw the yellow Volkswagen bug up ahead on the side of the road. The hood was raised, and a young man was gazing down at the engine with an air of hopelessness.Sure enough, my friend, Michael, stepped on the brake and said,”Looks like someone’s in trouble.” I sighed with resignation.In […]

A much-anticipated application of rapid prototyping is rapid tooling, the automatic fabrication of production quality machine tools. Tooling is one of the slowest and most expensive steps in the manufacturing process, because of the extremely high quality required. Tools often have complex geometries, yet must be dimensionally accurate to within a hundredth of a millimeter. […]

After the layer is cured, the machine vacuums up the excess liquid resin and sprays wax in its place to support the model during the build. The top surface is milled flat, and then the process repeats to build the next layer. When the part is complete, it must be de-waxed by immersing it in […]