Scab, a plant disease; also, the roughened crustlike area on the plant surface resulting from the disease. The disease is caused by various parasitic fungi, each of which usually infects only one kind of plant. Agricultural commodities susceptible to the disease include apples, avocados, barley, cucumbers, peaches, pecans, potatoes, and wheat. Spraying with fungicides and the use of disease-resistant varieties are common methods of prevention and control, but scab is difficult to control once it has taken hold.
Modern science allows us to break atoms down into tiny components. But can scientists use their mighty machines to recreate the foundation of the universe?
Some scientists believe that space is infinite. But is it? If it isn't, what form does space take? Is it a dodecahedron or a triple torus?