Entrainment of the biological clock in a light polluted world

Entrainment of the biological clock in a light polluted world

Event Name Entrainment of the biological clock in a light polluted world
Start Date 25 Sep 2018 1:00 pm
End Date 25 Sep 2018 2:00 pm
Duration 1 hour

Entrainment of the biological clock in a light polluted world.

Light/dark cycles due to Earth’s rotation are the most important time-keeper for the entrainment of the biological clock in terrestrial organisms. The blue part of the spectrum ~440-500nm is the dominant part at daytime, while orange and red parts of the spectrum above 560nm are the signal for night time (when the blue light is absent from our natural environment). In the last decades, an invasion of dominant blue light into our nights has emerged from the adoption of energy saving light bulbs, based on short wavelength lighting. The advent of Edison's original incandescent bulb changed our lifestyle forever; however, its spectrum was not so far from that of natural fire. The modern proliferation of short-wavelength lighting is now completing the change from night into day, and with it, is having a negative impact on natural ecosystems, and puts our own health at risk. This change interferes with our biological clock, suppresses the production of the neuro-hormone melatonin produced under natural dark conditions (the absence of blue light), and has a negative impact on our retina. The question to be asked is: how can we cope with this new global change? In this talk, we will try to understand the problem, and what can we do to minimize its damage.
Your speaker:
Professor Abraham Haim earned a Ph.D. in Environmental-physiology from HUJ Israel and his Post-Doc in Ecophysiology-Chronobiology from the MRI-University of Pretoria, SA. Since 1976, he has been a staff member of the University of Haifa and currently a full professor (Emeritus). He established the interdisciplinary Department of Natural Resources and served as the Environmental Management Head in 2000-2001 and 2010-2014. Dr. Haim has also served as the head of The Israeli Center for Interdisciplinary Research in Chronobiology, Dean of the faculty of Natural Sciences 2002-2007 and has published over 180 papers in previewed journal, book with Prof. Portnov: Light pollution as a New Risk Factor for Human Breast and prostate Cancers, Springer 2013. (http://research.haifa.ac.il/~biology/haim/haim.html)

Location: 7-9WW (E6A/B) Theatrette 102

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