A correlation is found that associates temperature anomalies with atmospheric carbon dioxide concentration, solar radiation transmission changes from volcanic aerosols, El Niño-La Niña, multidecadal Atlantic oscillations, and solar spots. Correlation is not causation but some plausible relationships can be identified. Read more

The climate always has changed, influencing the weather seasons after seasons. The purpose of this site is to present the author's understanding about this complex issue. Read more

Why leave the nuclear later and not immediately? What are the consequences of this exit? Read more

Concepts such as ICM, IPM, Sustainable Agriculture, organic and bio… have been filled with various words and ideologies and it has become difficult to use them in a neutral and objective way. Considering the long time lag needed to develop new agronomic technologies it is rather probable that no [green] revolution will be in sight soon. Here is a partial list of current and upcoming challenges. Read more

While the chemical pesticide business has grown up to a $45 billion level, the market for bio-control agents is stagnating at a low [unknown] level. In this paper factors affecting the development of the biopesticide business are analysed and some conclusions are drawn. Read more

Over the next forty years humankind will face the huge challenge to be well fed in a sustainable way. Agriculture must continue to increase its productivity and, as no new cultivated area will be available, this will need to be made by intensification. Read more