The topic of environmental modelling was last addressed in Issue 34 of ERCIM News, in July 1998. Influenced by the Kyoto Protocol (adopted on 11 December 1997), ase public awareness of environmental problems had at that time reached a peak. The goal of this thematic issue is to look at the pervasion of modern information and communication technology into the environmental and ecological sciences. comptia security+ The power of today's computational and communication resources means that we are able to create modelling, simulation and decision-support tools with unprecedented quality. Modelling the biosphere with ever-greater numbers of biotic and abiotic components remains a great challenge itil test of our time. Climate research (space weather included) uses models dealing with varying scales and resolutions, and will require new architectures with access to distributed resources. Branch-oriented simulation systems should prove the right software tools to be flexibly adapted to the special structure and data of security+ complex environmental systems.