Home Noise and Electric Grid Induced Ultrasounds [free]
Author: J. Manuel Feliz-Teixeira
Date: June 2011
(11 pages). For some years now we have been trying to identify and localise the sources of several ultrasound signals that we have detected in the building in which we live, and inside our individual rooms. These signals were first detected while preparing a lesson for students about sound mixing. We had chosen a very simple but reliable open source application named “Audacity” to record, mix and analyse some sounds. But when these signals were spectral analysed we were surprised by the amount of ultrasonic energy we may often, silently, be living under. We have detected them also in other places, even in our classrooms. After nearly two years of investigation to determine their probable origins, and an unfruitful session of contacts, both with the Electrical Company (EDP) and the public institution responsible for tcommunication and regulation of spectra (ANACOM), we decided to simply publish this article in order to let the subject be exposed to the public domain and conscience. Herein, we present several aspects of the issue, which we think should be addressed by public health officers as a probable long term threat to citizens health, noting that a significant amount of these ultrasounds are probably due in part to the new low consumption gas filled light bulbs along with ultrasonic repellents of animals and people.

Some Facts and Comments on the Strange Clouds
People Around the World Call “Chemtrails”, and Their
Probable Relation to the HAARP System [free]
Author: J. Manuel Feliz-Teixeira
Date: March 2011
(17 pages). Near 10 years have passed since my eyes could for the first time observe one of those abnormal trails crossing the entire sky. It was a clean day of a wonderful blue sky. And, over our heads, a first line of a constant width hundreds of kilometres in length was splitting such a blue ceiling into two parts. Only a single flight did it, in the dozens of flights crossing our skies on that day. It seemed almost absurd, and an abuse, at the time. It was around the beginning of the Autumn of either 1998 or 1999, I don't recall exactly. Until then, our eyes used to find the skies naturally either clean and of a transparent blue or with clean normal clouds. It could rain or be a sunny day, no matter the atmospheric conditions, the trails of the aircraft had always been of the same kind: a little white tail of around 10 or 20 times the aircraft length, which in some seconds would dissipate into the atmosphere, leaving the sky completely clean as before. Curiously, since that day, the number of flights leaving abnormal trails have slowly been increasing, and, along the last 10 years, we have also seen many things degrading from the sea water which slowly started to frequently exhibit a sort of bad smelling foam fluctuating along the coast, to the falling of thousands of bees dead before our feet, the sudden weakening and darkening of certain trees, which frequently died, like the pine and the eucalyptus, for example, to the mass deteriorating of citizens' health due to persistent respiratory problems and “strange” illnesses. In 2007, near 30% of the population of my country were already suffering chronic rhinitis1. In this article we give a testimony of our own empirical observations and comment on some aspects that may be related to the phenomenon. We hope this may be seen as a contribution to those in the Sciences of Health and Environment who probably might like to investigate the issue by means of a truly scientific perspective. In that sense, we will also make some references to the project known as High Frequency Active Auroral Research Program (HAARP), which many people on the  Internet suspect of also being related to such abnormal aircraft trails.