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In rural northern Nigeria, there are no refrigerators. Most people don't even have electricity. So perishable food must be eaten immediately, or it will go to waste. Mohammed Bah Abba, a local teacher, has developed an ingenious solution: the Pot-in-Pot Preservation Cooling System. A small earthenware pot is placed inside a larger one, and the space between the two is filled with moist sand. The inner pot is filled with fruit, vegetables or soft drinks; a wet cloth covers the whole thing. As water in the sand evaporates through the surface of the outer pot, it carries heat, drawing it away from the inner core. Eggplants stay fresh for 27 days, instead of the usual three. Tomatoes and peppers last for up to three weeks. A recipient of the Rolex Award for Enterprise, Abba, 37, who hails from a family of potmakers, is using his $75,000 award to make the invention available throughout Nigeria. He has already sold 12,000.
--INVENTOR Mohammed Bah Abba --AVAILABILITY Now (in Nigeria), for 40[cents] a set --TO LEARN MORE Visit rolexawards.com
POWER TO THE PEOPLE
Tired of having your cell-phone battery go dead just when you need it most? FreeCharge is a half-pound, hand-cranked generator that you can attach to your cell phone and turn for 30 sec. to generate enough juice for five minutes of talk time. The first version will work on most Motorola phones; the next ones will power other makers' phones. This is the third in a series of windup electronic devices originally designed for use in developing nations. The first two--the Freeplay radio and flashlight--have been surprise hits in the U.S.
--INVENTORS Freeplay and Motorola --AVAILABILITY In December, for $50 --TO LEARN MORE Visit motorola.com
PASS THE GRAVY
Mashed potatoes are the ultimate comfort food. But boiling the potatoes and whipping them up just right is a drag. Now homemaker Carmina O'Connor of Warrenville, Ill., has patented a mashed-potato machine that cooks, mashes and flavors potatoes in just 20 min. Chefs insert washed potatoes into a food processor-size device and add water and seasonings. A finalist in Hammacher Schlemmer's Search for Invention 2001 competition, O'Connor hopes that someday "mashed-potato machines will be for Americans what rice cookers are for Asians." Now all she needs is someone to make and market her invention.
--INVENTOR Carmina O'Connor --AVAILABILITY Uncertain
TALK IS CHEAP