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Earth & Space

showing 1-5 of 158 breaks

Watching the death of a distant galaxy

A large fraction of the stars of the present-day Universe is enclosed in giant, round-shaped galaxies, called “ellipticals”. Elliptical galaxies host very old stars, formed more than 10 billion years ago when the universe was still young. Despite the large availability of gas (the fuel... click to read more

  • Annagrazia Puglisi | Post-doc Research Associate at Centre for Extragalactic Astronomy, Department of Physics, Durham University, Durham, UK
Views 297
Reading time 4 min
published on May 4, 2022
Postcards from the past: how a fossil tree can picture the Peruvian Andes ten million years ago

If you have had the opportunity to climb up to the top of a tall mountain, you have probably noticed that as you go up the trees become smaller and smaller, until they disappear from the landscape, and only small shrubs, grasses and herbs fill... click to read more

  • Camila Martínez | Professor at Universidad EAFIT, Biology Department, Medellín, Colombia
Views 580
Reading time 4 min
published on Apr 13, 2022
Diving into the icy origins of Martian valleys

I invite you to use Google Earth and explore Mars. Look at the Martian southern hemisphere, and find an arid landscape littered with fossil valleys. These valleys speak of a remote past, when the red planet had water on its surface. There are thousands... click to read more

  • Anna Grau Galofre | Postdoctoral Research Fellow at Laboratoire de Planétologie et Géosciences, CNRS UMR 6112
  • Mark A. Jellinek | Postdoctoral Research Fellow at School of Earth and Space Exploration, Arizona State University, USA
  • Gordon R. Osinski | Postdoctoral Research Fellow at School of Earth and Space Exploration, Arizona State University, USA
Views 558
Reading time 3.5 min
published on Apr 1, 2022
The Ocean 100: the big fishes of the blue economy

Who are the “big fish” in what is often called the ocean economy? The ocean economy is the part of the global economy that is linked to sea, for example, as an operating space or an input to a company’s production. Collectively, this ocean-linked economic... click to read more

  • John Virdin | Director of Research at Nicholas Institute for Environmental Policy Solutions , Duke University, Durham, North Carolina, USA
Views 509
Reading time 4 min
published on Mar 30, 2022
Desertification danger: the aridification of humid regions

A major ongoing threat to our planet is global warming. One of the main implications of global warming is the aridification of the continents, which is when a region becomes dry. Both natural (e.g., higher temperature, reduced precipitation, increased evaporation) and human influenced changes (e.g.,... click to read more

  • Lucas Vimpere | PhD student at Earth and environmental sciences section, Faculty of science, University of Geneva, Geneva, Switzerland
Views 601
Reading time 3 min
published on Mar 16, 2022