On June 5-6, 2012, Venus will transit, or cross right in front of the solar disk. This will be the last transit of Venus in most of our lifetimes – the last transit of Venus in the 21st century. After June 2012, the next transit of Venus won’t happen until December 11, 2117. So cool!
A Van Gogh sky.....Most of the surface currents in the ocean are shaped by wind. In this visualization from the folks at NASA, the ocean is rich with lazy spirals that move in great circular sweeps (called "gyres") clockwise in the northern hemisphere, counterclockwise in the south.
To grow one million heads of lettuce using conventional agriculture methods in the US requires either 16 acres of land in the Northern states, 8 acres of land in the Southern states, or .9 acres in a traditional hydroponic greenhouse operation. Vancouver-based Valcent Products Inc. (OTCBB: VCTZF) claims that it can beat those numbers handily and produce the same amount of lettuce sustainably on just .16 acres with its patented hydroponic vertical growing system, VertiCrop™.