Each side of these devices blocks a set of images that appear in a different form of polarized light.

VOA: special.2010.01.26

Once the clay dries, the glassmaker dips the form in a container of hot liquid glass until it is covered.

VOA: special.2009.09.16

They even used cacao seeds as a form of money to pay taxes or give as holy offerings to the gods.

VOA: special.2010.02.17

It was also illegal for any person or organization to form a monopoly -- to get control of a whole industry.

VOA: special.2010.06.03

The Department of Education says sexual violence is a form of sexual harassment of students which violates Title Nine.

VOA: special.2011.05.19

A huge form that looks like a hill or wave takes up an entire room of the museum.

VOA: special.2009.05.06

Parents might sometimes withhold sweet food from a child as a form of punishment for saying bad things.

VOA: special.2010.06.20

Those who quickly became pregnant again were also less likely to have a pregnancy form in their fallopian tubes, a dangerous condition.

VOA: special.2010.08.11

At first it might seem very unusual to see a natural form like a hill inside a museum.

VOA: special.2009.05.06

Scientists agree that musical instruments are a sign of fully modern behavior and a complex form of communication.

VOA: special.2009.08.18

European Union officials say they will form a team of experts to investigate non-Islamist threats in Scandinavian countries.

VOA: special.2011.07.30

Now he has joined with aviation designer Burt Rutan to form a new space travel company, Virgin Galactic.

VOA: special.2009.12.18

Max Arthur Cohn's painting "Coal Tower" shows the dark form of a coal tower against a light sky.

VOA: special.2009.03.23

Researchers found that these drinkers develop a form of esophageal cancer six to ten times more often than those without the deficiency.

VOA: special.2009.05.13