Scientific American magazine says huge lasers turn only about twenty to thirty percent of the energy they use into a laser beam.

VOA: special.2010.09.01

They are part of a scientific and environmental-protection group called Living with Lions.

VOA: special.2009.05.05

They urged the United States government to pay for a secret scientific effort, called the Manhattan Project, to create the bomb.

VOA: special.2009.06.14

Years later, Ms.Skloot began research for a book about Henrietta Lacks, her cells and their influence on medical and scientific history.

VOA: special.2010.07.21

He had so totally given himself to scientific studies that he could not be weakened by a second love.

VOA: special.2009.09.26

Poets called it the Golden Age. A golden age now describes a historical period of great artistic,scientific or economic progress.

VOA: special.2010.06.06

Within a few years, he would be accepted into scientific organizations like the Geological Society and the Royal Society.

VOA: special.2009.02.25

Mister Page was a wealthy man who became very interested in the scientific work being done at the tar pits.

VOA: special.2010.04.07

The use of scientific knowledge in legal cases is called forensics, from the Latin term for a public forum.

VOA: special.2009.10.03

Doctor Supachai Rerks-Ngarm, who led the study for the Thai Ministry of Public Health,called it a scientific breakthrough.

VOA: special.2009.09.30

Military officials immediately offered to use the Jupiter to put a scientific satellite into orbit around the Earth.

VOA: special.2009.06.10

Jan Hafner is a scientific computer programmer with the International Pacific Research Center at the University of Hawaii.

VOA: special.2011.05.24

The twenty-two meter long rocket would put a little scientific satellite into orbit as one of the events of the international geophysical year.

VOA: special.2009.06.10

With help from Darwin's friends, the two naturalists presented a joint scientific paper to the Linnean Society of London in July of eighteen fifty-eight.

VOA: special.2009.02.25