This theory suggests that in its early history the Earth suffered glaciations so major that it froze over completely. It remains controversial, but has proved extremely fruitful for our understanding of how the Earth system functioned many hundreds of millions of years ago.
In a 1998 paper, Hoffman proposed that a drop in the level of carbon dioxide in the atmosphere 750 million years ago caused a global fall in temperature that very nearly wiped out all life on Earth. Hoffman’s most significant impact on Earth science has arisen from his development of holistic models of geological processes during the Precambrian (c. 4500 – 542 million years ago). The scope of this subsequent work shows a remarkable interdisciplinary understanding, and stands as an exemplary model of how Earth science research should be conducted.
The Wollaston Medal (named for William Hyde Wollaston 1766-1828, the discoverer of the element Palladium, in which the medal is struck) was first awarded in 1831 to William Smith, known as “the father of English Geology”, who is credited with creating the first geological map of Britain. It was bestowed on Charles Darwin in 1859 - the same year in which On the Origin of Species was published. The award, made some months earlier, was given in recognition of Darwin’s “judicious and vigorous efforts on some of the harder problems of geology”.
Past recipients of the Wollaston also include Richard Owen, founder of the Natural History Museum in London; William Buckland, who published the first full description of what would later become known as the dinosaur, and Charles Lyell.
In addition to the Wollaston medal, the society made the following awards for 2009.•Wollaston Medal - Prof. Paul Hoffman (Harvard University)
Sarah Day | alfa
LandKlif: Changing Ecosystems
06.07.2018 | Julius-Maximilians-Universität Würzburg
“Future of Composites in Transportation 2018”, JEC Innovation Award for hybrid roof bow
29.06.2018 | Fraunhofer-Institut für Lasertechnik ILT
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
16.07.2018 | Physics and Astronomy
16.07.2018 | Life Sciences
16.07.2018 | Earth Sciences