The invention of the microscope accelerated the advancement of microbiology at an extraordinary pace.

Even the devoted fans of soap operas and serialized TV programming deplore the trivial plots of many episodes.

Antique documents displayed in museum and library collections can be examined strictly by permission obtained in advance.

Mayan culture and its artifacts illustrate the many mysteries surrounding the progression of the human race.

Soldering involves heating lead or lead alloys to bind metal objects by means of molecular diffusion.

The preeminence of visual media as a source of pleasure has undermined the importance of reading for entertainment.

The widespread use of pesticides and herbicides has led to contamination of groundwater basins in the Ohio River valley.

In order to enlist in the U.S Air Force, a potential recruit must have a high school diploma.

Hans Lippershey, a Dutch optician, built his telescope to scan the nighttime skies and chart the heavenly bodies.