Tag: Short Speech
Pythagoras Pythagoras was born in 569 BC in Samos, Ionia and died in 475 BC. His father was Mnesarchus and his mother was Pythais, a native of Samos. His …
Pyramids The word Egypt evokes various images in people’s minds. They may think of the great stone pyramids, the Sphinx, or even the Nile River. One of these magnificent …
Pre-Computer The difference engine was a pre-computer that Charles Babbage created. It had a lot of moving parts that made jammed all the time and made it useless. Next …
Potassium Potassium is a metallic chemical element that is abundant in the Earth’s crust. Its salts are found in seawater. It is a part of soil rocks and minerals. …
Polio Vaccine How the polio vaccine caused more harm than good Poliomyelitis, also called polio or “infantile paralysis,” is an acute viral infection caused by the poliovirus. In the …
Polar Bear Scientists believe that Ursus Maritimus, the “sea bear,” evolved about 200,000 years ago from brown bear ancestors. Polar bears are the world’s largest land predators. They top …
Plato The traditional dates of Plato’s lifespan are 428 BCE to 3148 BCE. He was born in Athens to an aristocratic and well-to-do family. While Plato was still young, …
Plate Tectonics Plate Tectonics is a theory proposed and accepted by scientists to explain the nature of Earth’s surface characteristics and oceanic and continental make-up. Plate tectonics divides the …
Plastic Surgery Rings a bell to most people as what big time celebrities get to look even more perfect. Almost unreal. An unnatural thing to some but understandable for …
Plastic Chemistry The use of plastics is forever increasing from the days in which it was first invented. Not only does plastic now replace materials such as metal, glass, …
