The volcano has sent a massive cloud of microscopic ash particles swirling across northern Europe - particles that air specialists say are highly abrasive and could cause aircraft engines to fail.

VOA: standard.2010.04.16

For several tense minutes, the astronauts of Gemini Six were sitting on top of a highly explosive mass of rocket fuel.

VOA: special.2009.07.01

There are times,however, when a play became highly successful, even though most of the critics panned it without mercy.

VOA: special.2010.04.25

The sound had a rougher and more rebellious edge than the highly produced country music coming out of Nashville,Tennessee.

VOA: special.2010.06.11

The genome could also help farmers avoid Asian soybean rust disease, a highly destructive fungus spread by the wind.

VOA: special.2010.02.02

This spring, Everglades National Park launched a visitation program to what was once a highly restricted military base.

VOA: special.2009.06.30

Professor Dimopoulos says there is still a long way to go, but current malaria research is highly promising.

VOA: special.2009.12.22

Old TVs can contain over a kilogram of lead as well as cadmium -- both highly poisonous.

VOA: special.2010.11.01

Those first attempts at demanding a "tax" of foreign ships evolved into highly organized hijacking operations.

VOA: special.2009.05.27

In Washington, a military intelligence official told a Senate committee that Iran could be one year away from producing enough highly-enriched uranium for a nuclear weapon.

VOA: special.2010.04.17

"What we showed is that for students who are highly test-anxious, who'd done our writing intervention, all of a sudden there was no relationship between test anxiety and performance.

VOA: special.2011.01.20

She came from a wealthy and highly educated family.

VOA: special.2009.09.20

It is rather for us to be here dedicated to the great task remaining before us that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion that we here highly resolve that these dead shall not have died in vain that this nation,under God, shall have a new birth of freedom and that government of the people, by the people,for the people, shall not perish from the earth."

VOA: special.2009.11.12

The president said there has been a lot of debate on health care reform, some of it highly emotional.

VOA: standard.2009.10.05