LPJmL has been added as a project involved.

List of publications has been sorted by category and articles in conference proceedings added.

Homepage in german language contains now links to popular scientific articles.

Webpage about teaching activity added.

Appearance of webpages changed to new PIK style.

MPEG-1 animations added.

Webpage about the number of habitable planets in the Milky Way added.

Full text of the article "The fate of Earth's ocean" added.

Usage statistics of the new parallel computer can be accessed from my PIK intranet page. They will be updated monthly.

The following preprints have been added to the list of publications:

• "Biotic feedback extends the life span of the biosphere"
• "Limits of photosynthesis in extrasolar planetary systems for Earth-like planets"

Links to Astrobiology added.

PDF documents in journal format added to the list of publications.

Link to the research network "the nature of feedback controls systems: Daisyworld and beyond" added.

Full text of the following articles added:

• Reduction of life span as a consequence of geodynamics.
• Self stabilization of the biosphere under global change: a tutorial geophysiological approach.
• Tutorial Modelling of geosphere-biosphere interactions: the effect of percolation-type habitat fragmentation.
• A minimal model of interaction between climate and vegetation: qualitative approach.
• Climate, vegetation, and global carbon cycle: the simplest zero-dimensional model.
• "Emission game": some applications of the theory of games to the problem of CO₂ emission.
• Climate impact on social systems: the risk assessment approach.

Minimal model webpage updated (figure added).

CV and page about parallel programming added.

List of publications added.

Webpage about minimal models added.

Carbonate-Silicate rock weathering as an example for self regulation in the Earth system added to the Daisyworld page.