Now the two sides were racing to see who could launch the first human space traveler.

VOA: special.2011.05.15

But researchers are working to develop the first human vaccine.

VOA: special.2010.07.12

The WHO authorized drug manufacturers to begin testing possible vaccines, and the first human trials began a month later.

VOA: standard.2009.12.25

Astronaut Neil Armstrong, the first human to step on the Moon, observed the extraordinary accomplishment of the Apollo 11 mission forever established a lasting legacy in space flight.

VOA: standard.2009.07.16

He says identifying human antibodies that will stop the ability of the virus to reinvent itself is the first step.

VOA: special.2009.03.04

The tests are the first step in human clinical trials of two vaccine candidates developed at the University of Cape Town.

VOA: special.2009.07.29

"First off,there is the infectious disease risk because if you use human blood there's a lot of transmissible diseases.

VOA: special.2009.08.03

First tests of the bone fragment showed that human genetic material, human DNA,was present.

VOA: special.2011.03.15

This was the first meeting of Mr.Obama's full cabinet, after Health and Human Services Secretary Kathleen Sebelius took office on Tuesday.

VOA: standard.2009.05.01

"This is the world's first commercially available pedal generator, allowing to convert your human power into usable electricity.

VOA: standard.2010.02.24

Many consider AIDS 2000 as the first major conference to put a human face on the epidemic.

VOA: standard.2010.05.17

In his first appearance before the UN Human Rights Council representing the United States, U.S.Assistant Secretary of State Michael Posner called the report deeply flawed.

VOA: standard.2009.09.29

Ensalaco said he hopes the conference is the first of many would help educate the public as well as law enforcement to reach the goal of ending human trafficking.

VOA: standard.2009.11.13

"One of the things we found consistently in the academic literature and elsewhere was that the first responders, state and local law enforcement, did not recognize the signs of human trafficking."

VOA: standard.2010.07.23

And we've got to earn their trust," The president spoke at the end of his first formal meeting with all of the members of his Cabinet - except for Health and Human Services Secretary-designee Kathleen Sebelius who is awaiting Senate confirmation.

VOA: standard.2009.04.20