 With the demand for travel to Pacific countries on the increase, NASA is working with United States manufacturers to develop the technology for a better way to get there. In atmospheric sciences, researchers are assessing the projected future state of the ozone layer, and propulsion scientists are developing engine technology with very low emissions. In noise reduction, they're studying methods to make engines perform more quietly and high-lift devices which would allow an airplane to take off more quickly from an airport. In sonic boom studies, researchers are looking at ways to reduce the sonic boom produced by aircraft that will fly supersonicly. By the turn of the century, both NASA and industry hope to have a high-speed civil transport that will not only fly passengers across the Pacific in half the time, but one that will also be environmentally compatible and economically viable.