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News from Natural Sciences

2020.05.18 | Department of Molecular Biology and Genetics, Grant

Increased funding for research into the mechanisms of cholesterol uptake

With a grant of DKK 6,181,260 (USD 900,000) from the Independent Research Fund Denmark, Associate Professor Bjørn Panyella Pedersen can now increase his research efforts to gain a better understanding of the mechanisms behind cholesterol uptake.

The Delta Scuti-star beta Pictoris. Photo: ESO

2020.05.13 | Department of Physics

The variable delta Scuti stars reveal some of their secrets

Danish National Research Foundation centre in Aarhus has a central role in some newly discovered details of the remarkable delta Scuti stars. To be published in Nature Wednesday 13. May

“An intravital microscopy image depicting blood vessels, macrophages and nanoparticles. Interested in how they move in real-time? See the movie featured at the end of this article (image: Yuya Hayashi)

2020.05.13 | Department of Molecular Biology and Genetics

Zebrafish let you see the biological fate of nanoparticles in vivo

Ever wondered if you could see through the body of a living organism and observe the dynamic interplay between cells and nanoparticles injected into the bloodstream? This is now possible as the use of transgenic zebrafish embryos now offers a unique opportunity for intravital microscopy at imaging resolutions unrivalled by existing mammalian…

It is spring, the trees are turning green, and suddenly winter returns. Admittedly, just for a short visit, but many plant species cannot withstand this sudden change. Photo: Colourbox.
By integrating data on the climate and the properties of plants, the researchers created this map, which shows how the risk of frost damage to trees changes over time. The red areas are of particular concern. The frequency of late spring frosts increases drastically over time in these areas, and the trees have leaves with low resistance to frost. Graphic: Constantin Zohner, ETH Zürich

2020.05.12 | Department of Biology, Sustainability

Global warming means more frost damage to trees in Europe and Asia

A global research project has demonstrated that climate change entails a higher risk of freezing temperatures late in the spring. This can damage forests in Europe and Asia, where plants are not accustomed to this kind of fluctuation in the temperature and therefore start to blossom and grow leaves as soon as it is warm enough. In North America,…

One third of the world's population are in risk of being exposed to temperatures like the hottest parts of the Sahara desert within 50 years, if the human greenhouse gas emmissions continue unabated. Photo: Colourbox.
Expansion of extremely hot regions in a business-as-usual climate scenario. In the current climate, mean annual temperatures >290C are restricted to the small dark areas in the Sahara region. In 2070 such conditions are projected to occur throughout the shaded area following the RCP 8.5 scenario. Without migration, that area would be home to 3.5 billion people in 2070 following the SSP3 scenario of demographic development. Background colours represent the current mean annual temperatures. Graphics: Xu Chi

2020.05.04 | Department of Biology, Sustainability

‘Near-unlivable’ heat for one-third of humans within 50 years if greenhouse gas emissions are not cut

Areas of the planet home to one-third of humans will become as hot as the hottest parts of the Sahara within 50 years, unless greenhouse gas emissions fall, according to research by an international team of scientists with participation from Aarhus University published in the journal Proceedings of the National Academy of Sciences this week. The…

2020.05.01 | Department of Geoscience, People

Geology professor elected Foreign Member of the Royal Society

Else Marie Friis elected as Foreign Member of the Royal Society

Dean Kristian Pedersen. Photo: Melissa Yildirim, AU Foto

2020.04.30 | Faculty of Natural Sciences

New dean to seek out the faculty's DNA

On 1 April, Kristian Pedersen took up his position as the first dean of the Faculty of Natural Sciences. He is looking forward to getting down to work, despite the corona crisis and having to work from home. Read his thoughts about his new job, the faculty and what drives him as a leader.

Hans Brix (left) has been appointed head of the Department of Biology. Jan Piotrowski has been appointed head of the Department of Geoscience. (Photo: AU Photo)

2020.04.30 | Department of Geoscience, Department of Biology

Department heads appointed at Geoscience and Biology

Jan Piotrowski has been appointed head of Geoscience, where he has been acting head of department since the summer of 2019. Hans Brix has been head of department at the Department of Bioscience since 2014 and he has now been appointed as the head of the Department of Biology.

Private photo

2020.04.29 | Department of Biology, People

AU professor joins exclusive club: World-renowned academy invites Bo Barker Jørgensen to join

Professor Bo Barker Jørgensen from Aarhus University is to become a member of the world's most prestigious science academy, the American National Academy of Sciences. The academy only invites researchers with very significant results, and being invited is a unique accolade.

Lava fountains from the Holuhraun fissure eruption in Iceland in September 2014. The composition of iron isotopes in the basalt reflects a leak in the Earth's core. Photo: Joschenbacher - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/ w/index.php?curid=35599563
Schematic cross-section of the Earth's interior. 1. Earth crust (continental) 2. Earth crust (seabed) 3. Upper mantle 4. Lower mantle 5. Outer core (liquid) 6. Inner core (solid) A: The crust-mantle boundary (also called Mohorovičić discontinuity) B: The core-mantle boundary (also called Gutenberg discontinuity). This is where the heavy iron isotopes leak into the Earth’s mantle according to the new study. C: The boundary between the inner and outer core. Graphic: Dake, CC BY-SA 2.5.

2020.05.04 | Department of Geoscience

A small leak in the Earth's core

The Earth’s core is not as isolated from the rest of the globe as previously believed. An international research group headed by Aarhus University has discovered that tiny amounts of iron from the core 2,900 km beneath us are seeping into the mantle and all the way up to volcanic islands on the Earth's crust.

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