Covers many areas of purifying water by the sun. The 'How Does It Work?' section has diagrams and directions using a common bottle style.. (Copyright 2006 by Librarians' Internet Index)
Explains how to look safely at the sun and sun activity, such as eclipses and sunspots. Topics include projecting the sun through a tiny hole onto a white sheet of paper and using telescopes and filters. Includes links to related material and sites. (Copyright 2006 by Librarians' Internet Index)
Has practical instructions (with diagrams) in English and Arabic. Uses a particular type of container common in the Middle East.. (Copyright 2006 by Librarians' Internet Index)
Thousands of images from various U.S. space exploration programs. Features images of the nine planets, moons, asteroid, comets, and other bodies; photos of spacecraft and telescopes; discussion of the missions that obtained the photos and images; and related material.. (Copyright 2006 by Librarians' Internet Index)
Descriptions and images of daysigns and gods, a calculator for matching Gregorian to Aztec dates, and the current day's solar year, 13-day period, and day name.. (Copyright 2006 by Librarians' Internet Index)
Current time, international clocks, alternate time systems, national debt, world and US population, death, military spending, doomsday, sun, millenium, and other clocks. Also clock and counter programming code.
