Researchers at the City College of New York say they have developed a new way to generate power for planes and automobiles using piezoelectrics. Piezoelectrics convert the kinetic energy of motion into electricity. The researchers will present their concept later this month at the 62nd Annual Meeting of the American Physical Society's (APS) Division of Fluid Dynamics.
According to a recent GENETICS study, a family of genes (1-aminocyclopropane-1-carboxylate synthase, or ACS genes) are responsible for production of ethylene and since this gas affects many aspects of plant development, it could lay the foundation for future genetic manipulation that could make plants disease resistant, able to survive and thrive in difficult terrain, increase yields, and other useful agronomical outcomes.
The discovery was made with the weed Arabidopsis thaliana but is applicable to plants used in agriculture, they say.
A key riddle surrounding the origin of biological molecules like RNA and DNA is how they first came together billions of years ago from simple precursors but a study appearing in the Journal of Biological Chemistry says researchers in Italy have reconstructed one of the earliest evolutionary steps yet; generating long chains of RNA from individual subunits using nothing but warm water.
Many researchers believe that RNA was one of the first biological molecules present, before DNA and proteins, but there has been little success in recreating the formation on RNA from simple "prebiotic" molecules that likely were present on primordial earth billions of years ago.
According to new research conducted by scientists from the University of Maryland and the Ecole Centrale de Lyon in France, smokers may face another serious health risk from the habit and the tobacco industry may have another serious PR problem on their hands as a result.
A study appearing in the upcoming issue of Environmental Health Perspectives suggests that Cigarettes are "widely contaminated" with bacteria, including some known to cause disease in people. The research team describes the study as the first to show that "cigarettes themselves could be the direct source of exposure to a wide array of potentially pathogenic microbes among smokers and other people exposed to secondhand smoke."
Many politicians see government welfare as the best way to address the problem of poverty in society. President Barack Obama, for example, recently promised to halve poverty within ten years, and his Republican opponent, John McCain, similarly vowed to make poverty eradication a top priority of his Administration.
Others, however, say that even in the current economic situation, in developed countries, this kind of rhetoric about cutting "poverty" is misleadingly outmoded—because it implicitly suggests that government income transfers are the best vehicle for achieving substantial reductions in poverty.
Virtually limitless sources of energy are everywhere. One such potential source is energy from ocean waves that could be used to generate electric power. Yet as engineers test new technologies for capturing it, the devices are plagued by battering storms, limited efficiency, and the need to be tethered to the seafloor.
Currently, a team of aerospace engineers is attempting to address these setbacks by applying the principles that keep airplanes aloft to create a new wave-energy system that is durable, extremely efficient, and can be placed anywhere in the ocean, regardless of depth.