A little filtering is necessary to avoid the ones that involve sledgehammers, dangerous chemicals or hard to find items, but there are plenty that can be built at home to the wonderment of kids and dinner guests. These range from levers and pulleys to cloud chambers to a demonstration of a chain reaction using mousetraps. Almost a thousand items in all, each diagrammed with a short explanation of the components. A software tool, Generic Mapping Tool, helps you create the map for your favorite geography. With links to the Ocean Drilling Program, you can find map information for anywhere on earth on land or at sea.
Maps can show political boundaries or physical features such as earthquake faults or rivers.
Users have the option of seeing their creation in black and white or color. Make spacey things' includes space mobiles, asteroid nanorovers and recipes for Asteroid potatoes and 'Blame El Nino pudding'. The latter certainly took a leap of the imagination by the site authors and involves recreating coloured satellite images using different flavoured jellies. Pretty inventive and fun and a good way of killing a few hours during the school holidays. You can also find out how much energy is stored in a peanut and make a solar-powered hotdog cooker.