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Earth & Space

showing 161-165 of 174 breaks

The escape of the Sun’s fraternal twin

Roughly half of all stars are in multiple systems (binaries, triples etc), which means that two or more stars orbit each other because of their mutual gravitational pull. For stars of about the mass and age of the Sun, the average separation between companion stars... click to read more

  • Sarah Sadavoy | Hubble Fellow at Harvard-Smithsonian Center for Astrophysics, Cambridge, United States
  • Steven Stahler | Associate Researcher at University of California, Berkeley, Department of Astronomy, Berkeley, United States
Views 4530
Reading time 3.5 min
published on May 8, 2018
For polar bears the cost of living is rising

A warming Arctic is causing reductions in sea ice thickness and increasing its drift speed. Compositional and dynamic changes in sea ice could have impacts on the ability of ice-dependent vertebrates to acquire and amass energy needed for maintenance, growth, and reproduction. Knowledge of how... click to read more

  • George Durner | Research Zoologist at US Geological Survey, Alaska Science Center, Anchorage, Alaska, USA
Views 6470
Reading time 4 min
published on Mar 13, 2018
Global contamination of honey by insecticides

Bees and other pollinators provide indispensable ecosystem services and are essential for the cultivation of one third of crops worldwide. Yet, this free service may be threatened by the use of insecticides among which neonicotinoids. There is currently a strong debate about banning these pesticides.... click to read more

  • Edward A. D. Mitchell | Professor at Laboratory of Soil Biodiversity, University of Neuchâtel, Rue Emile-Argand 11, 2000 Neuchâtel, Switzerland
  • Blaise Mulhauser | Curator & Director at Botanical Garden of Neuchâtel, Pertuis-du-Sault 58, 2000 Neuchâtel, Switzerland
  • Matthieu Mulot | PhD student at Laboratory of Soil Biodiversity, University of Neuchâtel, Rue Emile-Argand 11, 2000 Neuchâtel, Switzerland
  • Aline Mutabazi | Research Assistant at School of Pharmaceutical Sciences, University of Geneva, Centre Médical Universitaire – Rue Michel Servet, 1, 1211 Geneva 4, Switzerland.
  • Gaétan Glauser | Senior Scientist at Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland.
  • Alexandre Aebi | Senior Lecturer at Laboratory of Soil Biodiversity, University of Neuchâtel, Rue Emile-Argand 11, 2000 Neuchâtel, Switzerland
Views 6169
Reading time 3.5 min
published on Dec 18, 2017
The climate's barrier to coastal hurricanes

Hurricanes are tremendously dangerous to lives and property, particularly when they approach land. In the Atlantic, hurricanes go through periods of higher- and lower-than-normal activity, and these periods can last 30 years or more. For example, we have been in an active period since around... click to read more

  • Jim Kossin | Atmospheric Scientist at NOAA's Center for Weather and Climate, USA
Views 8586
Reading time 4 min
published on Nov 8, 2017
When and where neonicotinoids are bad for bees

The impact of neonicotinoids on bees has always been a contentious issue, not least because reported evidence of their effects has been variable. Neonicotinoids are most often applied to crop seeds, rather than sprayed directly on plants. As the plant grows the pesticide moves though... click to read more

  • Ben A. Woodcock | Ecological Entomologist at NERC, Centre for Ecology & Hydrology, Wallingford, Oxfordshire OX10 8BB, UK
  • Matthew S. Heard | Plant Ecologist at NERC Centre for Ecology & Hydrology, Wallingford, Oxfordshire OX10 8BB, UK
  • Nadine Mitschunas | Field Ecologist at NERC Centre for Ecology & Hydrology, Wallingford, Oxfordshire OX10 8BB, UK.
  • Brigitta Raffa | Undergraduate Student at Szent-István University, 2103 Gödöllö, Hungary.
  • Dora Vaskor | Undergraduate Student at Szent-István University, 2103 Gödöllö, Hungary.
  • Áron Bihlay | Undergraduate Student at Szent-István University, 2103 Gödöllö, Hungary.
  • Judy A. Webb | Associate Researcher at NERC Centre for Ecology & Hydrology, Wallingford, Oxfordshire OX10 8BB, UK.
  • Richard F. Pywell | Biodiversity Science Area Head at NERC Centre for Ecology & Hydrology, Wallingford, Oxfordshire OX10 8BB, UK.
Views 6535
Reading time 4 min
published on Oct 26, 2017