Cai guo-qiang studied in japan where he began to explore the creative possibilities of as a tool for making drrawings.

Cai guo-qiang studied in japan where he began to explore the creative possibilities of  gunpowder as a tool for making drrawings.
Cai Guo-giang discovered this invention when he went to study in Japan in 1986. Later on, his artworks large-scale explosions that took several lives.

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.