Tornado warnings still depend in large part on human observations.

VOA: special.2011.04.19

While human trials are still a long way off, scientists in the field are excited and encouraged by the research.

VOA: standard.2010.08.11

But we also see still the use of violence directed against supporters of Tsvangirai and also the abuses still of human rights seen in Zimbabwe,".

VOA: standard.2009.09.12