Non-physical abuse by a dating partner such as threats, controlling behavior and harassing text messages can have a serious effect on a teenager’s health and well-being, finds new research led by a Michigan State University scholar. (more…)
Since the discovery of the Van Allen radiation belts in 1958, space scientists have believed these belts encircling the Earth consist of two doughnut-shaped rings of highly charged particles — an inner ring of high-energy electrons and energetic positive ions and an outer ring of high-energy electrons.
In February of this year, a team of scientists reported the surprising discovery of a previously unknown third radiation ring — a narrow one that briefly appeared between the inner and outer rings in September 2012 and persisted for a month. (more…)
The fossilised remains of a reptile closely related to lizards are the oldest yet to be discovered.
Two new fossil jaws discovered in Vellberg, Germany provide the first direct evidence that the ancestors of lizards, snakes and tuatara (known collectively as lepidosaurs), were alive during the Middle Triassic period – around 240 million years ago. (more…)
Berkeley Lab experts contribute to IPCC 5th Assessment Report.
Over the next century, most of the continents are on track to become considerably warmer, with more hot extremes and fewer cold extremes. Precipitation will increase in some parts of the world but will decrease in other parts. These are some of the conclusions reached by Lawrence Berkeley National Laboratory (Berkeley Lab) scientist Michael Wehner and his co-authors on the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC).
Wehner, a climate scientist in Berkeley Lab’s Computational Research Division, and William Collins, head of the Lab’s Climate Sciences Department, were lead authors on the IPCC report’s chapters on long-term climate change projections and climate models, respectively. They are among more than 200 lead authors from more than 30 countries in IPCC’s Working Group I. Their report released today provides a comprehensive assessment of the physical science basis of climate change. (more…)
Greenpeace und Bioland fordern: Nulltoleranz muss bleiben
Deutsches Rapssaatgut ist frei von Gentechnik. Das geht aus den von Greenpeace und Bioland abgefragten Saatgutanalysen der Bundesländer hervor. Die zuständigen Behörden hatten 281 Rapssaatgut-Proben getestet. Verunreinigungen haben sie nicht festgestellt. Im vergangenen Jahr waren noch fünf von 337 Rapssaatgut-Proben positiv getestet worden.
“Staatliche Kontrollen sind wichtig. Die diesjährige Analyse zeigt, dass sauberes Saatgut möglich ist”, sagt Jan Plagge, Präsident von Bioland. “Die Nulltoleranz für Saatgut muss auch zukünftig bestehen bleiben”, fordert Plagge. Immer wieder wird auf EU-Ebene eine Aufweichung der Nulltoleranz ins Gespräch gebracht. Auch dieses Jahr forderte der Bundesverband Deutscher Pflanzenzüchter BDP, Schwellenwerte für gentechnische Verunreinigung von Saatgut einzuführen. (more…)
Engineering doctoral students win Composites Simulation Challenge
Two University of Delaware mechanical engineering doctoral students working in the Center for Composite Materials, Subramani Sockalingam and Raja Ganesh, took first prize at the American Society for Composites (ASC) inaugural Student Simulation Challenge held Sept. 9 at Pennsylvania State University.
The goal of the 12-hour competition, held during the annual ASC Technical Conference, was to see which student team could best predict the behavior of a composite laminate material that included a pattern of holes. (more…)
PASADENA, Calif. — NASA’s Curiosity rover is revealing a great deal about Mars, from long-ago processes in its interior to the current interaction between the Martian surface and atmosphere.
Examination of loose rocks, sand and dust has provided new understanding of the local and global processes on Mars. Analysis of observations and measurements by the rover’s science instruments during the first four months after the August 2012 landing are detailed in five reports in the Sept. 27 edition of the journal Science. (more…)
Study results could foreshadow earth’s future climate, MU researcher says
COLUMBIA, Mo. – For years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. Now, a University of Missouri researcher has found evidence suggesting that no ice sheet formed at this time. This finding could help environmentalists and scientists predict what the earth’s climate will be as carbon dioxide levels continue to rise.
“Currently, carbon dioxide levels are just above 400 parts per million (ppm), up approximately 120 ppm in the last 150 years and rising about 2 ppm each year,” said Ken MacLeod, a professor of geological sciences at MU. “In our study, we found that during the Late Cretaceous Period, when carbon dioxide levels were around 1,000 ppm, there were no continental ice sheets on earth. So, if carbon dioxide levels continue to rise, the earth will be ice-free once the climate comes into balance with the higher levels.” (more…)
