The difference is that the printer builds a three-dimensional scaffolding out of a sugar-based material called a hydrogel.

VOA: special.2010.10.19

They point out that the finding was based on one air measurement taken in an industrial town that is not even in Pittsburgh.

VOA: special.2009.07.13

He points out that traditional flowerpots made from petroleum-based plastics can last much longer.

VOA: special.2010.06.01

Several big phonemakers are coming out with Android-based mobile phones.

VOA: special.2010.01.26

The Swiss-based nonprofit says that as European countries roll out their vaccine campaigns, they face opposition from anti-vaccine lobbyists.

VOA: standard.2009.11.25

Meanwhile,the Pakistani army has blocked all entry and exit routes out of South Waziristan, where officials believe Mehsud's fighters are based.

VOA: standard.2009.10.03

Amid a public outcry, al-Shabab's Mogadishu-based spokesman Ali Mohamed Rage denied his group had carried out the bombing.

VOA: standard.2009.12.23

"This is a movie based on a family. It is a young,troubled teenager whose family gets wiped out.

VOA: standard.2010.04.08