A new study led by University of Wisconsin-Madison anthropologist John Hawks describes the past 40,000 years as a time of supercharged evolutionary change for humans, driven by exponential population growth and cultural shifts. Using data from an international genomics project, the new study, appearing in the Proceedings of the National Academy of Sciences, counters the […]
Researchers from the Mayo Clinic found they could isolate and culture nanoparticles from filtered homogenates of diseased calcified human cardiovascular tissue. These cultured nano-sized particles were recognized by a DNA-specific dye, incorporated radiolabeled uridine, and after decalcification, appeared via electron microscopy to contain cell walls. The peer-reviewed paper, entitled “Evidence of Nanobacterial-like Structures in Human […]
Research from the Neuropsychiatric Institute at UCLA demonstrates the potential of a substance found in yohimbe tree bark to assist in the recovery from anxiety disorders. In the latest in a series of studies of how mice acquire, express and extinguish conditioned fear, the UCLA team found yohimbine helps mice learn to overcome the fear […]
If comets hitting the Earth could cause ecological disasters, including extinctions of species and climate change, they could also disperse Earth-life to the most distant parts of the Galaxy. The “splash-back” from a large comet impact could throw material containing micro-organisms out of the planet’s atmosphere, suggest scientists from the Cardiff University Centre for Astrobiology. […]
Laser weapons? Ray guns? Not as fanciful as you might think thanks to recent advcances in the development of powerful free-electron lasers (FEL). FELs have been shown to generate very large amounts of power, tunable from the microwave to the visible spectrum. The Office of Naval Research (ONR) is part of a team that is […]
