The earth rotates on its axis at one thousand miles an hour; if it turned at one hundred miles an hour, our days and nights would be ten times as long as now, and the hot sun would then burn up our vegetation during each long day, while in the long night any surviving sprout would freeze. Again, the sun, source of our life, has a surface temperature of 12,000 degrees Fahrenheit, and our earth is, just far enough away so that this ‘eternal fire” warms us just enough and not too much! If the sun gave off only one-half its present radiation, we would freeze, and if it gave
The human body: A carefully protected fortress No matter how clean our environment may be, we share our living space with many microorganisms. If you could examine with a microscope the room you are now sitting in, you would clearly see the millions of creatures you are living with. So, in this sense, a human being is a besieged fortress. It goes without saying that to protect this fortress under assault a failsafe plan is necessary. Human beings were created with the perfect protection that they need; they are not defenseless against these enemies. Allah Ta’ala has created micro defense systems in the human body, protecting it from all
The secret of firefly efficiency Fireflies produce yellow-green light in their stomach parts. The cells that manufacture this light contain a chemical known as “luciferin,” the product of a chemical reaction between oxygen and another chemical, “luciferase.” The insect controls the emission or extinguishing of the light by regulating the amount of air reaching the cells through its respiratory passages. Normal light bulbs work with a 10% efficiency; the other 90% is being given off as heat. In contrast, fireflies produce light with a 100% efficiency. This achievement by fireflies represents a model for scientists. But what is the force that directs fireflies to produce light so efficiently?