GeoLog

Predators or gardeners: how penguins fertilise Antarctica’s biodiversity

Anna Katsigera April 19, 2024

Sea birds contribute importantly to biogeochemical cycles in coastal ecosystems and on islands. Feeding on the marine food chain and nesting on land, they carry large amounts of marine nutrients into terrestrial ecosystems. This might be of particular importance for the nitrogen (N) cycle of terrestrial ecosystems in the antarctic. Credit: Daniel Wasner (distributed via imaggeo.egu.eu)

On the desolate Antarctic peninsula, a colony of penguins creates a hub of biodiversity. One may ask, how exactly do those aquatic birds help maintain and enrich the variety of different kinds of organisms from plants and animals, to a wide range of insects and micro-organisms that live on our planet? The answer is quite intriguing. Scientists from the University of Science and Technology of China ...[Read More]

The EGU Great Debate: About the Anthropocene, scientists and comfort zones?

Maria Scheel April 19, 2024

Are we as scientists still in an elitist bubble, or do we need to glue ourselves to streets and buy tractors for protest? Somewhere along the lines of finding and leaving comfort zones versus the need to become uncomfortable while many globally already are, is the setting of this year’s EGU great debate (Image Credit: Maria Scheel).

EGU has hosted a Great Debate with world-renowned climate scientists and activists about the growing human impact on our natural and social environment for many years. There are many aspects to the debate, from voting bad politicians out, to communication duties of scientists, the interconnection of a need for social equity and decarbonization, and more. In this blog post, I want to focus o ...[Read More]

Congratulations to the winners of the EGU24 Photo Competition!

Hazel Gibson April 19, 2024

For this year’s Photo Contest, EGU received a number of amazing images capturing a broad spectrum of the geosciences. Since the selection committee whittled the field down to 10 finalists, you have been voting for your favourites throughout EGU24’s week-long conference, both on-site in Vienna at the EGU booth, and online. After an enthusiastic response from voters, we are now ready -and very ...[Read More]

Looking for answers towards the stars: stone tools and nuclides unveil the earliest solid evidence of humans in Europe

Anna Katsigera April 18, 2024

This false-color image from three of NASA's Great Observatories provides one example of a star that died in a fiery supernova blast. Called Cassiopeia A, this supernova remnant is located 10,000 light-years away in the constellation Cassiopeia. Credit: NASA/JPL-Caltech/STScI/CXC/SA

When stars explode, supernova-style, the explosion sets off streams of high energy particles across the universe, mainly protons and alpha particles, that after millions of years reach us here on Earth. Secondary cosmic rays pass through our bodies and almost everything around us, and they penetrate a few meters into the ground where they interact with atoms in soil and rock. This produces new iso ...[Read More]