For example, lightning can create tubes of glass when it strikes sand that has the right combination of minerals.
VOA: special.2009.09.16
But the experts say you should still use traditional CPR with a combination of breaths and compressions on babies and children.
VOA: special.2009.06.09
Recent studies also support a theory that a combination of genes is linked to the development of lupus.
VOA: special.2009.04.14
If your combination of numbers is chosen, you win a huge amount of money often in the millions.
VOA: special.2009.10.04
In one group,the infected man or woman began to take a combination of three antiretroviral drugs immediately after being found to have HIV.
VOA: special.2011.05.18
A treatment could include a combination of stress-reduction methods and drugs such as painkillers and steroids.
VOA: special.2009.04.14
It takes the right combination of wind,temperature,pressure and humidity to create even a weak tornado.
VOA: special.2010.05.11
The music known as salsa was a combination of Cuban "son" with other Latin sounds.
VOA: special.2009.04.19
A treatment could include a combination of stress-reduction methods and drugs like painkillers and steroids.
VOA: special.2010.06.15
Sometimes he has had to be treated with a combination of drugs in a hospital.
VOA: special.2010.03.30
He says the combination of credit card debt and big student loans is burying young people in debt and driving many of them to bankruptcy.
VOA: special.2009.04.10
They must find the right combination of soil mix, water content and drying methods.
VOA: special.2009.01.12
A combination of snow, rain and freezing conditions caused traffic problems in Germany.
VOA: special.2011.01.11
For some patients,they say, a combination of talk therapy and medication works best.
VOA: special.2010.04.13
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