Ever since his earliest times, man must have dreamed of copying the birds; of flying, of gaining mastery over the third dimension of space. The earliest practicable route to achieve the aim of flying was in the use of balloons. The first balloons were hot-air balloons; they relied on the lower density of hot air, compared to that of the surrounding air, to obtain the lift they needed. Balloons ...

Health Statistics, Centers for Disease Control and Prevention. The series of reports on Aging trends was developed with support from the National Institute on Aging and its purpose is to monitor the health of the aging population. By providing this type of information, we hope to help focus research on the most effective ways to use resources and craft health policy to promote longer, healthier...

Commercial air travel is one of the safest means of transport. However, the environment within the aircraft cabin may have deleterious physiological effects on passengers, especially those with underlying medical problems and those who are old. With growing affluence, cheaper airfares and an ageing population, there will be more older people travelling by air over extended periods and longer di...

Despite the progress in aging research that highlights the role of the nervous system in longevity, whether genes that control development and consequently structure of the nervous system affect lifespan is unclear. We demonstrated that a mutation inshuttle craft, a gene involved in the nervous system development, increased the lifespan of unmated females and decreased the lifespan of mated fem...

Aviation, in general, and aerospace in particular needs new propulsion systems which allow the craft to reach high speeds by cheaper and more efficient methods. Author offers a new propulsion system using electrons for acceleration of the craft and having a high efficiency. As this system does not heat the air, it does not have the heating limitations of conventional air ramjet hypersonic engin...