He said that fuller animal trials were essential before the technique could be transferred into the fertility clinic for humans.

BBC: Gene technology

She also stresses the importance of a stand that keeps the instrument at the proper height, since good posture is essential to proper technique.

WSJ: Digital Pianos: Great Performers for Tight Spaces

Compression, a mathematical technique to reduce the number of bits required to store information, is essential because image files are very large.

FORBES: Technology briefing