So when spacecraft are sent to other planets, scientists will look for layers of gypsum in hopes of finding similar fossils.

VOA: special.2010.05.25

It describes in detail the huge amount of work involved in carefully examining the many layers of tar and earth.

VOA: special.2010.04.07

Archeologists are able to estimate the age of these objects by dividing layers of dirt into time periods.

VOA: special.2009.08.18

MOCA says its aim is to show both the many layers of their experience and Americas development as a nation of immigrants.

VOA: special.2010.03.03

L is for layers.Wearing loose, lightweight clothes, one layer on top of another, is better than wearing a single heavy layer of clothing.

VOA: special.2009.12.23

Maya Lin cut out the shapes of three bodies of water using thin layers of wood.

VOA: special.2009.05.06

The outside layers are a bit crunchy, then the soft part takes over and the whole thing seems to just melt in your mouth.

VOA: special.2010.04.12

Quilts are made by piecing together layers of cloth to make colorful coverings.

VOA: special.2009.11.04

This group plays very inventive music using unusual instruments and layers of sounds.

VOA: special.2009.04.03

Next he coats the walls inside and out with layers of clay plaster.

VOA: special.2009.10.05

For example,workers removed more than twenty layers of paint from one room.

VOA: special.2010.05.10

It is a circular image with many layers of flying birds.

VOA: special.2009.09.02

The layers are very thin-usually one-fifth or one-tenth of a millimeter.

VOA: special.2010.10.29

Some prints look like layers of colorful spills of paint.

VOA: special.2009.09.02