Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

Because of the extreme pressure underwater, divers are often sluggish.

Some stretches of Florida resemble West Africa.

Feeling irritable may be a side effect of too much medication.

How the ancient builders were able to raise the large rocks that they used in constructing their pyramids and cities is still an unanswered question.

Ron O'Neal received widespread acclaim for his acting in productions of Dream on Monkey Moutain.

The manic depressive usually fluctuates between great excitement and deep depression.

Every year, each households in the United States discards approximately a ton of trash.

Our library's bibliography is the clearest I have ever seen.

After attempting to join a religious order in 1862, Auguste Rodin Afinally yielded to his inclination to pursue an artistic career.