Virtually all organisms and living beings have to submit themselves to the natural aging process. But how does this process work? The Max Planck researchers whose work we report investigate fish or a freshwater polyp which have almost attained immortality. And they grapple with the social consequences of age in humans - when it comes to retirement after an active working life.
Light is the elixir of life, inspiration for artists and an indispensable tool in science and technology. Reason enough for UNESCO to proclaim 2015 as the International Year of Light. And a good opportunity to dedicate the focus of our magazine to this topic: discover how Max Planck scientists work with optical tweezers, film the movements of electrons, or analyse the painting by Caravaggio.