Tag Archives: Washington

Carbon’s role in atmosphere formation

A new study in Proceedings of the National Academy of Sciences suggests that the way carbon moves from within a planet to the surface plays a big role in the evolution of a planet’s atmosphere. If Mars released much of its carbon as methane, for example, it might have been warm enough to support liquid water.

PROVIDENCE, R.I. [Brown University] — A new study of how carbon is trapped and released by iron-rich volcanic magma offers clues about the early atmospheric evolution on Mars and other terrestrial bodies. (more…)

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UA Researchers Solve Mystery of Lincoln’s Funeral Train

With the 2015 sesquicentennial of Abraham Lincoln’s death approaching, interest is rising, and with new tools, UA researchers have turned their attention to one of the last remaining mysteries about what reportedly was the largest traditional funeral in American history – the train’s color.

A trove of information exists about Abraham Lincoln’s funeral, which drew millions of mourners during a two-week railway procession across the Northern states.

But until now, the precise color of the president’s railcar had been lost to history. (more…)

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A Cyclotron’s Long Journey Home

One of the world’s first working circular particle accelerators returns to Berkeley Lab—75 years later.

Seventy-five years after one of the world’s first working cyclotrons was handed to the London Science Museum, it has returned to its birthplace in the Berkeley hills, where the man who invented it, Ernest O. Lawrence, helped launch the field of modern particle physics as well as the national laboratory that would bear his name, Lawrence Berkeley National Laboratory.

On Jan. 9, 1932 the brass cyclotron—which measures 26 inches from end to end and whose accelerating chamber measures just 11 inches in diameter—was successfully used to boost protons to energies of 1.22 million electron volts. Its return to Berkeley Lab caps a decades-long saga in which various parties endeavored to secure the cyclotron’s return from London, but the persistence of Pamela Patterson, who chronicles Berkeley Lab’s history as managing editor of its website, finally paid off. (more…)

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NASA’s NuSTAR Helps Solve Riddle of Black Hole Spin

PASADENA, Calif. — Two X-ray space observatories, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency’s XMM-Newton, have teamed up to measure definitively, for the first time, the spin rate of a black hole with a mass 2 million times that of our sun.

The supermassive black hole lies at the dust- and gas-filled heart of a galaxy called NGC 1365, and it is spinning almost as fast as Einstein’s theory of gravity will allow. The findings, which appear in a new study in the journal Nature, resolve a long-standing debate about similar measurements in other black holes and will lead to a better understanding of how black holes and galaxies evolve. (more…)

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In Conversation with: Paul Bracken, Expert on Nuclear ‘Power Politics’

North Korea, which just conducted its third nuclear test, is using its weapons program to deter the United States by holding its allies “hostage,” according to Paul Bracken, who teaches management and political science at Yale.

Bracken is a member of the Council on Foreign Relations, serves on several Department of Defense advisory boards, and is the author, most recently, of “The Second Nuclear Age: Strategy, Danger, and the New Power Politics” (Times Books, 2012). The following is an edited version of an email interview with him. (more…)

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Rise in Teen Marijuana Use Stalls, Use of Synthetic Marijuana and ‘Bath Salts’ is Very Low

ANN ARBOR — National samples of 45,000 to 50,000 students in three grades (8, 10, and 12) have been surveyed every year since 1991 as part of the nationwide Monitoring the Future study. Among the most important findings from this year’s survey of U.S. secondary school students are the following:

Marijuana. After four straight years of increasing use among teens, annual marijuana use showed no further increase in any of the three grades surveyed in 2012. The 2012 annual prevalence rates (i.e., percent using in the prior 12 months) were 11%, 28%, and 36% for 8th, 10th, and 12th graders, respectively. (Among the 8th graders there was a modest decline across the past two years—from 13.7% in 2010 to 11.4% in 2012—that reached statistical significance.) (more…)

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Congress Works Better Than Many Think, New Research Shows

The perception of Congress as a gridlocked institution where little happens is overblown, according to new research by scholars at the University of Colorado Boulder and the University of Washington.

And the way much of Congress’ work gets done is through self-manufactured crises like the “fiscal cliff,” say political science professors Scott Adler of CU-Boulder and John Wilkerson of UW.

“Yes, Congress has taken on a more partisan tone in recent decades,” Adler said. “We do hear a lot about the conflicts between Democrats and Republicans on key pieces of legislation. But we’re also seeing Congress exceeding public expectations. Congress does govern.” (more…)

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Crowdsourcing Site Compiles New Sign Language for Math and Science

A multimedia feature published this week in the New York Times, “Pushing Science’s Limits in Sign Language Lexicon,” outlines efforts in the United States and Europe to develop sign language versions of specialized terms used in science, technology, engineering and mathematics.

The article shares newly defined signs for terms like “light-year,” “organism” and “photosynthesis.” It also describes a successful crowdsourcing effort started at the University of Washington in 2008 that lets members of the deaf and hard-of-hearing community build their own guide to the evolving lexicon of science.

“It’s not a dictionary,” explained Richard Ladner, a UW professor of computer science and engineering. “The goal of the forum is to be constantly changing, a reflection of the current use.” (more…)

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