Top Themes

ALAN Conference Series

ALAN 6 will take place from 16-18.06.2020 in Lleida, Spain.

Night Sky Data to the People!

A new website presents citizen science data

Touring Exhibition

Our touring exhibition with 15 posters can be borrowed for events!

'Loss of the Night' App

The 'Loss of the Night' app measures sky brightness! Take part in a world-wide citizen science project that measures star visibility and light pollution. The app is free!

City Night Time Lapse

This growing collection of time lapse videos of nights in urban centres provides insights how city lights change throughout the course of the night

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Leibniz Research Centre for Working Environment and Human Factors (IfADo)


The IfADo contributes multidisciplinary research for the benefit and welfare of the working individual. It is based in Dortmund and is affiliated to the Technical University Dortmund, where it is involved in the educational program through the organisation of various lectures. The IfADo pays particular attention to researching the potentials and risks of modern labour on the basis of life and behavioural science. The results serve to design guidelines for a beneficial and healthy working environment.

As part of the "Loss of the Night" project, the IZW researches on the subproject "Light pollution – Effect on humans and the chronobiological impact of artificial nocturnal lighting". Herein, it focuses on the quantificated suppression of melatonin synthesis caused by light pollution, on the stability of the circadian phase position, sleep disorders and possible health consequences, as well as possible consequences, caused by disturbances of the various functions of melatonin.

Leader of subproject at the IfADo is Univ.-Prof. Dr. B. Griefahn