ANN ARBOR — CT scans of two newborn woolly mammoths recovered from the Siberian Arctic are revealing previously inaccessible details about the early development of prehistoric pachyderms. In addition, the X-ray images show that both creatures died from suffocation after inhaling mud.
Lyuba and Khroma, who died at ages 1 and 2 months, respectively, are the most complete and best-preserved baby mammoth specimens ever found. Lyuba’s full-body CT scan, which used an industrial scanner at a Ford testing facility in Michigan, was the first of its kind for any mammoth. (more…)
The USGS study identifies 78K metric tons of known PGE resources in South Africa and Zimbabwe and estimates 75K metric tons in PGE resources that may be present, but are undiscovered. This is more than 20 times the total tonnage produced since the 1920s when PGE mining began in these countries. (more…)
The Arctic is home to a growing number of whales and ships, and to populations of sub-Arctic whales that are expanding their territory into newly ice-free Arctic waters. (more…)
A widespread lack of understanding of the global scale and impact of the First World War has been revealed in a new report. Research by the British Council in the UK and six other countries shows that knowledge of the conflict – which began 100 years ago – is largely limited to the fighting on the Western Front.
University of Exeter historian, Dr Catriona Pennell, acted as historical consultant to the report ‘Remember the World as well as the War’. It explores people’s perceptions and knowledge about the First World War and highlights the truly global nature of the conflict and its lasting legacy. This links closely with Dr Pennell’s various research projects, including the ‘First World War in the Classroom’, an Arts and Humanities Research Council(AHRC) funded project that seeks to establish how the First World War is taught in English Literature and History classrooms in England, and will provide the data set that will inform the nature and content of the Institute of Education’s WW1 Centenary Battlefield Tours Project. (more…)
UD faculty members discuss 2013 prize-winners at annual symposium
Today’s chemists might work at a computer as often as in a laboratory, medical researchers studying conditions such as diabetes rely on understanding how cells carry and deposit materials within the body, and average investors in the market increasingly buy index funds to average out the short-term ups and downs of individual stocks.
The discoveries that led to these changes are among the work that was honored by this year’s Nobel Prizes. (more…)
Washington, D.C.— Around 250 million years ago, at the end of the Permian period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth’s history. Some researchers have suggested that this extinction was triggered by contemporaneous volcanic eruptions in Siberia. New results from a team including Director of Carnegie’s Department of Terrestrial Magnetism Linda Elkins-Tanton show that the atmospheric effects of these eruptions could have been devastating. Their work is published in Geology.
The mass extinction included the sudden loss of more than 90 percent of marine species and more than 70 percent of terrestrial species and set the stage for the rise of the dinosaurs. The fossil record suggests that ecological diversity did not fully recover until several million years after the main pulse of the extinction. (more…)
Floods didn’t make floodplains fertile during the dawn of human agriculture in the Earth’s far north because the waters were virtually devoid of nitrogen, unlike other areas of the globe scientists have studied.
Instead, the hardy Norsemen and early inhabitants of Russia and Canada have microorganisms called cyanobacteria to mostly thank for abundant grasses that attracted game to hunt and then provided fodder once cattle were domesticated. The process is still underway in the region’s pristine floodplains. (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…)
