• The marine food web is based on microalgae, which are eaten by small algae-eaters (algaevores), mostly small, drifting animals (zooplankton). Free-swimming algae (phytoplankton) and zooplankton are food for plankton-eaters (planktivores) of different sizes. The smaller planktivores, like reef fish, are preyed upon by bigger carnivores, which are eaten by even bigger carnivores.

    The monk seals are one of Hawaii's iconic species. But for how much longer? They are at the brink of extinction. Numbers are decreasing every years, due to too many pups and youngsters dying. But there is hope, as the numbers are actually increasing in part of the archipelago. How can the rudder be turned for the total population to grow again? A short overview.

    Correction: The Monk Seals DO NOT eat half their body weight per night! That is a tremendous exageration.

  • In the context of the International Building Exhibition IBA 2013 in Hamburg, Germany, the first algae bioreactor house was build. Algae-filled solar panels are the center of the house's energy cycle. One one hand, they produce heat by absorbing solar energy, which is used to heat the house and produce warm water.On the other hand they produce biomass for biogas production, which is used to provide electrical energy and more heat.How the energy cycle and thus the house works, we explain in this short video.