Disaster Communication: How Climate Change Made VoIP Necessary The environment is changing. (peakoil.net)
Such a study would require large numbers because of the low frequency of adverse events, and the necessary environment of experienced home deliveries has virtually disappeared. (bmj.com)
Human reproductive fitness begins with birth and breastfeeding, and the necessary environment is maternal - infant SKIN - TO - SKIN CONTACT (SSC). (goldlearning.com)