Martin Fisher -- a co-founder of the non-profit KickStart -- demonstrates the technology on the rooftop of his San Francisco office.

VOA: standard.2010.08.09

National Investment Commission Chairman Richard Tolbert says Buchanan Renewable's demonstrates the strength of both Liberia's commitment to renewable energy and its investment climate.

VOA: standard.2009.09.13

Mr.Obama said maneuvering by Senate Republicans to block extension of unemployment benefits demonstrates, what he called,a lack of faith in the American people.

VOA: standard.2010.07.19

Russian Deputy Foreign Minister Grigory Karasin says Tbilisi's accusation against Moscow demonstrates a "sick imagination and irresponsible behavior on the part of Georgian leadership."

VOA: standard.2009.05.05

The fight to end violence against children is the theme for this year's activities in Senegal, which Coulibaly says demonstrates the government's commitment to the cause.

VOA: standard.2009.11.22

He gets excited each time he demonstrates the capabilities of his new,experimental WAIEX aircraft.

VOA: standard.2010.08.11

She says the raid demonstrates the commitment of law enforcement and the serious investigative work done to find the perpetrators of the bombing and dismantle their terror network.

VOA: standard.2009.09.17