Which role does plankton play in the marine food and for our planet's climate? How do oceanic dead zones develop? What do we know about life in the dark, cold deep sea? Such questions fascinate me. During my studies and a subsequent research career, I could pursue my scientific curiosity on several ship expeditions in the Atlantic and Pacific Oceans.


Today, I report on marine research and the impacts of climate change for various German and international print and online media. With a PhD in biogeochemistry, I take a critical, journalistic look at the effects of human activity on global element cycles - from the sea floor, to the polar regions to our own waters.


First a marine researcher, then a science editor and now a freelance journalist: I report from the depths of the ocean, on the future of tropical coral reefs as well as melting sea ice and glaciers. With a notebook and photo camera, I join researchers on expeditions both on land and on the world's oceans.


I write for newspapers, magazines, and web news outlets. I often work on long features and reportages, but also deliver crisp reports or interviews. My portfolio further includes translating popular science articles, editorial support for public relations work and presentations and moderations on ocean and climate research.


My search for stories regularly takes me to remote parts of the world - from the glaciers of Greenland, across the equator all the way to Antarctica. With my camera, I portray scientists in ice and snow, in their labs and under water. I try to capture the beauty of unique and disappearing ecosystems in powerful images. 

Tim Kalvelage, PhD

Science Reporter & Photographer

Bremen, Germany

+49 151 541 911 05