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…)
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…)
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…)
On Monday morning — Labor Day — first-year students gathered in classrooms around campus for their First Readings seminars. The program, initiated at Brown seven years ago, is designed to give new students a common reading experience and prepare them for college life.
PROVIDENCE, R.I. [Brown University] — Classes don’t officially begin until Wednesday, but first-year students got their first taste of academic life at Brown on the first Monday in September, when all 1,537 of them gathered in classrooms around campus for the annual First Readings seminars. (more…)
THE PRESIDENT: Good afternoon, everybody. Please have a seat.
Over the past few weeks, I’ve been talking about what I believe should be our number-one priority as a country — building a better bargain for the middle class and for Americans who want to work their way into the middle class. At the same time, I’m focused on my number-one responsibility as Commander-in-Chief, and that’s keeping the American people safe. And in recent days, we’ve been reminded once again about the threats to our nation.
As I said at the National Defense University back in May, in meeting those threats we have to strike the right balance between protecting our security and preserving our freedoms. And as part of this rebalancing, I called for a review of our surveillance programs. Unfortunately, rather than an orderly and lawful process to debate these issues and come up with appropriate reforms, repeated leaks of classified information have initiated the debate in a very passionate, but not always fully informed way. (more…)
