Yogurt stands in for mayonnaise, and veggies such as celery, onions or bell peppers add a bit of crunch. One serving of egg salad made with two egg whites, 1/2 ounce of plain, fat-free yogurt and 1/4 stalk of celery has 60 calories, less than 1 gram of carbohydrates and 0.5 grams of fat.
The Amazing Inventions of Heron of Alexandria. Heron, also known as Heron of Alexandria, developed many machines and mechanical devices with practical uses, showing that it was possible to take theory and put it into practice. Some of his devices were: 1  A coin operated 'Holy Water Dispenser'. 2  A water organ. 3  The Aeolipile, a steam-powered device.
Ancient Egypt (3300BC to 525BC) is where we first see the dawn of what, today, we call medical care . The Egyptian civilization was the first great civilization on this planet. Egyptians thought gods, demons and spirits played a key role in causing diseases.ncient Egypt (3300BC to 525BC) is where we first see the dawn of what, today, we call medical care . The Egyptian civilization was the first great civilization on this planet. Egyptians thought gods, demons and spirits played a key role in causing diseases.