Writer/Author
Fifty years after men walked on the moon, their footprints remain pristine, unchanged by wind, rain or time. Back on Spaceship Earth, the elements grow extreme and time grows short. Atmospheric carbon dioxide, global mean temperatures, and coastal sea levels…
As Vladimir Putin tightens his grip on Crimea and masses troops along the Ukraine border, it’s a good time to remember that U.S. astronauts are entirely dependent on Russia for transportation to and from the International Space Station. NASA astronaut…
More than twenty-four hours after watching the new movie “Gravity” in IMAX 3-D, images from the film continue hurtling periodically through my mental machinery, and like the orbital debris that drives the plot, they keep puncturing and shredding whatever task…