In Indonesia, the batik method of dying fabric involves using wax to make complex patterns.

VOA: special.2009.11.04

Using his understanding of complex geometric forms, Lang has played an important role in origami's evolution.

VOA: standard.2010.03.17

Cardiologists, such as Dr.Gerard Martin, say that within the last four years, doctors have learned how to perform more complex heart surgeries using catheters."

VOA: standard.2010.01.01