It contains forms of hydrogen and oxygen that can mark, or label, these elements within body water.

VOA: special.2011.07.27

One shows the remains of a dying star four thousand light years away which has thrown off a cloud of glowing hydrogen gas.

VOA: special.2009.09.30

The bus uses a hybrid system that combines the hydrogen fuel cells with high power batteries.

VOA: special.2009.09.07

The city's urban transportation system recently launched the first of up to five hydrogen buses.

VOA: special.2009.09.07

Hydroxyl is the combination of one hydrogen atom and one oxygen atom.

VOA: special.2009.09.30

The project hopes to export hydrogen fuel cell buses in the future.

VOA: special.2009.09.07

The hydrogen sulfide reacted with oxygen in rainwater moving through the rock.

VOA: special.2011.04.11

Water is made of one oxygen atom and two hydrogen atoms.

VOA: special.2009.09.30

The hydrogen reacts with oxygen to produce electricity and water.

VOA: special.2009.09.07

They say hydrogen peroxide or carbamide peroxide may also help.

VOA: special.2010.03.31

The cells created electricity by mixing hydrogen with oxygen.

VOA: special.2009.06.24

Critics note the high cost of producing hydrogen.

VOA: special.2009.09.07

He opposed developing the hydrogen bomb.

VOA: special.2009.06.14

Both men opposed the hydrogen bomb.

VOA: special.2009.06.14