Under some conditions, snowflakes can form that are five centimeters long.

VOA: special.2010.01.05

Those were really tough tours. They were kept out very often for up to three months, under some pretty grueling conditions.

VOA: special.2010.06.21

Mr.Hopkins and his crew filmed the doctors working under some of the most extreme and dangerous conditions imaginable.

VOA: special.2010.07.26