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The nanostructured cloak of invisibility

https://www.mpg.de/10797830/nanostructured-cloak-of-invisibility

Most lenses, objectives, eyeglass lenses, and lasers come with an anti-reflective coating. Unfortunately, this coating works optimally only within a narrow wavelength range. Scientists at the Max Planck Institute for Intelligent Systems in Stuttgart have now introduced an alternative technology. Instead of coating a surface, they manipulate the surface itself. By comparison with conventional procedures, this provides the desired anti-reflective effect across a wider wavelength range. But more than this, it largely increases the light transmittance through surfaces. In the future, the nanostructured surfaces may improve high-energy lasers as well as touchscreens and the output of solar modules.
This magic from the world of insects inspired scientists to try the same tactics

Impact of Using Multiple Social Media Channels on Well-Being

https://www.mpg.de/20622069/impact-of-using-multiple-social-media-channels-on-well-being

Social media have become an integral part of everyday life. However, numerous studies have produced conflicting results on how the use of these applications affects the mental health of their users. A common assumption is that the use of many different social media platforms has a negative impact on users‘ well-being. Researchers Sophie Lohmann and Emilio Zagheni, Director of the Max Planck Institute for Demographic Research (MPIDR) in Rostock, Germany, investigated this assumption. In their study, they used a statistical technique to adjust for the fact that people who use a number of social media platforms may be different to start with. The result of the study shows that the use of many different social media platforms is not a significant risk factor for the well-being of the users.
In essence, we reweighted the sample and simulated that each participant had the same