27 May 2016

Mass extinction by sulfide suffocation

Mass extinction by sulfide suffocation

The reason for the first of the five biggest mass extinction events in animal history has long been a matter of scientific debate. New geochemical evidence suggest anoxic waters played a key role in a complex interplay of glaciation and sea level drop. In collaboration with Emma Hammarlund, we investigated the chemical composition of the oceans […]

26 May 2016

Oxygenation of the Earth’s oceans

Oxygenation of the Earth’s oceans

Animals evolved on our planet 3,500 million years after the origin of microbial life forms. Thus, we present a rare form of life that is not representative of life in the Universe. Why did complex organisms evolve so late in Earth’s history? Something seems to have triggered evolution towards intelligent life forms. Could this ‘something’ be […]