This expansion is necessary because the current number of addresses under Internet Protocol version four (IPv4) is gradually being exhausted.

WHITEHOUSE: Office of Science and Technology Policy Blog

In a world where a growing number of devices have Internet protocol addresses, building security into these systems has never been more important.

FORBES: The Biggest Cybersecurity Threats of 2013

As the world's number three polluter, Russia's signature was crucial to bring the protocol into force.

BBC: NEWS | Science/Nature | Russian firms turn Kyoto pioneers

Coroner John Leckey listened to legal submissions from lawyers acting for a number of the bereaved who are pressing for the hearing to examine RUC protocol for bomb scares.

BBC: 'Examine reaction to bomb warnings' - QC

Already, atmospheric scientists have detected reductions in atmospheric concentrations of a number of ozone depleting chemicals, a positive sign that the 1985 Montreal Protocol to reduce Cfc emissions is working.

BBC: News | Sci/Tech | Ozone hole reaches record size

Internet Protocol version six, or IPv6, is an Internet addressing system designed to expand the number of available IP addresses.

WHITEHOUSE: Office of Science and Technology Policy Blog

Groups like the ASRM have a series of strong protocol recommendations for in vitro procedures, such as accurately labeling embryos with the patient's name and Social Security number, and color-coding samples uniquely to avoid confusion.

CNN: Fertility clinic to couple: You got the wrong embryos