This is because glass has the hardness of crystal materials while also having a disordered arrangement of molecules like a liquid.

VOA: special.2009.09.16

Failing to report an injury like this,can be dangerous if a patient,or a medical worker, has an infectious disease.

VOA: special.2010.02.10

This person is very poor and only has enough money for the most important things in life,like food.

VOA: special.2010.06.20

from Ziggy Marley's latest album. Like many songs on the record, this one has a special guest performer.

VOA: special.2009.06.05

But, like a lot of these films, this one has a parental guidance rating of "PG-13."

VOA: special.2011.06.20

"This region that has known a lot of hardship will bounce back just like it has bounce back before.

VOA: standard.2010.06.14

The Salvation Army also has other programs to help those in need, including shops like this one in Virginia.

VOA: standard.2009.12.16

"Coming in this season, shooting has been really cool, but kind of feels like your senior year, where you're really appreciative."

VOA: standard.2010.05.25

None.No Israeli government has ever taken this step and nothing remotely like this occurred during the Bush administration."

VOA: standard.2009.11.25

Although Israel says the blockade is essential for its national security, scenes like this have some in Israel questioning whether the closure has worked.

VOA: standard.2010.06.16

"I think Pope Benedict XVI has got to say that he too has been, just like every other bishop, slow to come around to answering adequately this problem."

VOA: standard.2010.03.28

Those who have managed to get hold of tickets have no doubts it will be an unforgettable match, like this Spanish fan who has high hopes his team will win.

VOA: standard.2009.05.26

Compared to the well-known seismic areas like the Pacific Rim, the Caribbean seems geologically quiet, but this area where tectonic plates meet has a long history of earthquakes, tsunamis,and volcanoes.

VOA: standard.2010.01.13

"And like Lyndon Johnson he has this really ominous problem, which is if you escalate in Afghanistan and we end up in that swamp that will over time be a kind of constant drain on support and enthusiasm among young people, among minorities,among liberals, among progressives and it will really sap the president's ability to continue to energize this broad agenda,".

VOA: standard.2009.12.29