Antonie van Leeuwenhoek, (born October 24, 1632, Delft, Netherlandsâdied August 26, 1723, Delft), Dutch microscopist who was the first to observe bacteria and protozoa. His researches on lower animals refuted the doctrine of spontaneous generation, and his observations helped lay the foundations for the sciences of bacteriology and protozoology.
Preheat oven to 375 degrees F. Lay the sweet potatoes out in a single layer on a roasting tray. Drizzle the oil, honey, cinnamon, salt and pepper over the potatoes. Roast for 25 to 30 minutes in oven or until tender.Take sweet potatoes out of the oven and transfer them to a serving platter. Drizzle with more extra-virgin olive oil.reheat oven to 375 degrees F. Lay the sweet potatoes out in a single layer on a roasting tray. Drizzle the oil, honey, cinnamon, salt and pepper over the potatoes. Roast for 25 to 30 minutes in oven or until tender. Take sweet potatoes out of the oven and transfer them to a serving platter.
1 Place the cut sweet potatoes in the baking dish and turn them so that they are coated with the olive oil. Sprinkle moderately with oregano, and salt and pepper (to taste).  Bake in a preheated 350 degrees F (175 degrees C) oven for 60 minutes or until soft.