Respiratory protective equipment, like all PPEs, are distinguished in many different types, each with its own sub-categories and specific uses and effectiveness.

During the two world wars of the 20th century, submarines were essentially surface ships with the ability to sail underwater for short periods. Usually they used their underwater capabilities during the final approach

The application of scientific methods to examine the evidences gathered in order to solve queries, thereby helping the legal system to acknowledge the truth is known as forensic science.

Ideas of time travel have existed for centuries, but when Albert Einstein released his theory of special relativity, he laid the foundation for the theoretical possibility of time travel.

In preparing to write my novel Tsunami, about a fictional undersea volcano on the verge of exploding and sending a monster tsunami smashing into California, I did a great deal of research into the world of natural disasters.

Many different species in the history of life on this planet have simply ceased to be. Gone but not forgotten these strange animals leave evidence of their existence entombed in the sedimentary layers of the earth's crust.

Stronger evidence in courtrooms—it’s what every attorney, defendant, and plaintiff dreams of. Beginning in the last 1980s, this is exactly what began to surface through DNA profiling.

Televisions previous to the Plasma TV explosion used the (CRT) cathode ray tube to give users the ability to watch television. CRT televisions works by shooting out a beam of negative charged particles called electrons into a large glass tube.