The artist can then add a second color of glass to make designs over the first layer of glass.

VOA: special.2009.09.16

In modern terms,the hot oven that the glassblower uses to quickly reheat the glass is called a "glory hole."

VOA: special.2009.09.16

But here,the many objects are stored behind glass so the public can explore the Met's rich collection of historical objects.

VOA: special.2010.08.04

When it is cooked at a very high temperature, the glass pieces melt and take the shape of the clay form.

VOA: special.2009.09.16

The concrete and glass museum is built next to a body of water, so it almost seems to float.

VOA: special.2011.04.13

Tim Tate is also working on a series of blown glass sculptures inside of which are small televisions playing videos.

VOA: special.2009.09.16

Obsidian is a kind of black glass formed when the heat of a volcano melts the silica material in sand.

VOA: special.2009.09.16

In the center of the courtyard, there is a huge glass and steel pyramid surrounded by water fountains and smaller pyramids.

VOA: special.2010.06.23

The Roman historian Pliny said that Phoenician sailors accidentally discovered how to make glass over three thousand years ago.

VOA: special.2009.09.16

My brother planned to have a glass of beer with his friends a quick one C before he went home.

VOA: special.2009.07.19

he whispered. He gave the remaining glass of whiskey to Henry just as the clock began to strike midnight.

VOA: special.2009.07.04

For example, lightning can create tubes of glass when it strikes sand that has the right combination of minerals.

VOA: special.2009.09.16

So,at the age of forty-seven she started to glue crushed colored glass in special designs on every surface in her house.

VOA: special.2010.04.14

Scientists said the glass came from material created as deep as three hundred kilometers below the moon's surface.

VOA: special.2009.07.29