The unusually long period of cold weather has shown how even warm climates can sometimes freeze over.

VOA: special.2010.01.12

Still, many people found themselves unusually moved by the historic presidential inauguration last week in Washington.

VOA: special.2009.01.28

He can point out the male paradise whydah with its unusually long black tail feathers.

VOA: special.2009.08.19

Their heads are smaller than average and they can have unusually shaped ears.

VOA: special.2009.09.09

It remained at unusually high levels in several countries during their summer months.

VOA: special.2009.11.24

He says an unusually late rainy season might be causing the invasion.

VOA: special.2009.01.27

The semi-annual IMF economic forecast, which is due to be released next week, says that the current recession will likely be unusually long and severe.

VOA: standard.2009.04.16

Unusually severe rains began falling on September 1 in Burkina Faso, depositing about one-quarter of the country's annual rainfall on the capital,Ouagadougou in just one day.

VOA: standard.2009.09.13

Unusually heavy rains are also affecting people in Ivory Coast, Mauritania,Mali,Liberia,and Gambia.

VOA: standard.2009.09.06

In Southeast Asia, where millions of people are vulnerable to the effects of climate change, such as drought or unusually heavy rains, there are growing concerns for the future.

VOA: standard.2009.12.21

But the U.S.reaction to Thursday's attack was at an unusually high level, with both President Obama and Secretary of State Hillary Clinton issuing written statements expressing sympathy to the families of victims and calling for the attackers to be held accountable.

VOA: standard.2010.07.16