The first Earth Day was launched April 22, 1970, before sustainability became really fashionable. The Earth Day
this year celebrated two days ago concentrated on Green Cities. On this 44th birthday John Elkington and Jochen Zeitz posted a
The US National Institute of Environmental Health Sciences located in North Carolina organises on April 21 a webnar about PCB in Schools
with 5 presentations by experts. A report from the event attracting more than 300 people was published in the June 2014 issue of "Environmental Factor".