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Earth & Space

showing 36-40 of 122 breaks

U.S. Mineral Supply Chain Security in the Age of Pandemics and Trade Wars

The COVID-19 pandemic highlights the fragility of global supply chains and underscores the risks of supply disruptions during a crisis. This is only the most recent reminder of such risks to economies that are heavily reliant on imported goods and materials, with supply chain disruptions... click to read more

  • Nedal T. Nassar | Chief, Materials Flow Analysis Section at 1National Minerals Information Center, U.S. Geological Survey
  • Steven M. Fortier | Senior Policy Advisor at National Minerals Information Center, U.S. Geological Survey; Office of Science and Technology Policy, Executive Office of the President of the United States
Views 2915
Reading time 3.5 min
published on Nov 23, 2020
Extreme glacier melt and climate change

Glaciers around the world are melting faster than in any previous decade since measurements began. Glaciers form when snow accumulates over many years and compresses into ice. Glaciers accumulate snow in the winter, and then melt ice in the summer. Cold temperatures, more snow, or both,... click to read more

  • Lauren J. Vargo | Research Fellow at Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
Views 1127
Reading time 3 min
published on Nov 10, 2020
How to know slow slip events and anticipate future large earthquakes

The technology of positioning ourselves with satellites, called GNSS (Global Navigation Satellite System) positioning, is now inseparable from our lives. If we apply high-precision analysis technology for GNSS positioning, we can see the plate tectonics at a cm/year-order speed. When this high-precision observation is performed... click to read more

  • Yusuke Yokota | Lecturer at Institute of Industrial Science, University of Tokyo, Tokyo, Japan
Views 1117
Reading time 3 min
published on Oct 22, 2020
A prehistoric seawall to combat Mediterranean Sea-level rise

In November 2019, world media reported floods in Venice with the highest water levels in the region in more than 50 years (peaking at 1.87m above mean sea level). The mayor of Venice tweeted "These are the effects of climate change... the costs will be... click to read more

  • Ehud Galili | Lecturer and researcher at The Zinman Institute of Archaeology, University of Haifa, Haifa, Israel
  • Jonathan Benjamin | Associate Professor at College of Humanities, Arts & Social Sciences, Flinders University, Adelaide, Australia
  • Liora Kolska Horwitz | Researcher at The National Natural History Collections, Faculty of Life Science, The Hebrew University of Jerusalem, Jerusalem, Israel
Views 1774
Reading time 4 min
published on Oct 6, 2020
A natural close-up of a pierced galaxy 18 billion light-years away

Einstein's general theory of relativity predicted that gravity not only acts between two masses but also affects light which has no mass. We cannot see this effect in everyday life, but when light travels over vast intergalactic distances and is affected by the incredibly large... click to read more

  • T. Emil Rivera-Thorsen | Postdoctoral Research Fellow at Department of Astronomy, Oskar Klein Center, Stockholm University, Stockolm, Sweden
Views 1721
Reading time 3.5 min
published on Oct 1, 2020