On March 26th, 1827 Ludwig Van Beethoven died in Vienna. The day after, a twelve year old boy took a lock of his hair as a souvenir. 167 years later the hair was sold at an auction in London. Its new owners were two Americans, Ira Brilliant and Che Guevera. Between those dates the lock of hair undertook an extraordinary historical odyssey. From hand to hand, from country to country, and from century to century. This is the story of that journey
. [more inside]
posted by 23
on May 18, 2013 -
Scientific American reports:
"An isolated population of Arctic foxes that dines only on marine animals seems to be slowly succumbing to mercury poisoning." Though a definitive causal link is difficult to establish, an isolated population of arctic foxes on Russia's Mednyi Island is believed to be collapsing due to mercury contamination as a result of its seafood-heavy diet. Where
does all that mercury in the environment
come from anyway? Why, it's another biproduct of burning fossil fuels, of course, and predictably, rates of mercury pollution are only expected to increase
. In some places in the US, even rainwater
is showing high levels of contamination. [more inside]
posted by saulgoodman
on May 10, 2013 -
"One might think that, once we know something is computable, how efficiently it can be computed is a practical question with little further philosophical importance. In this essay, I offer a detailed case that one would be wrong. In particular, I argue that computational complexity theory---the field that studies the resources (such as time, space, and randomness) needed to solve computational problems---leads to new perspectives on the nature of mathematical knowledge, the strong AI debate, computationalism, the problem of logical omniscience, Hume's problem of induction, Goodman's grue riddle, the foundations of quantum mechanics, economic rationality, closed timelike curves, and several other topics of philosophical interest. I end by discussing aspects of complexity theory itself that could benefit from philosophical analysis."
posted by cthuljew
on May 5, 2013 -
Imaging The Arctic
: "In Spring 2013, based out of the small settlements of Niaqornat and Kullorsuaq, expeditionary artist
Maria Coryell-Martin will accompany scientist Dr. Kristin Laidre
onto the pack ice of Baffin Bay." They are keeping an online field journal detailing Dr. Laidre's study of the effects of sea-ice loss on narwhals and polar bears, with Maria Coryell-Martin's illustrations accompanying field notes.
posted by ChuraChura
on May 1, 2013 -
Scripps Institute of Oceanography projects that next month its monitoring station will for the first time measure CO2 at 400 parts per million.
Atmospheric CO2 has risen from 280 parts per million before the Industrial Revolution. 400 ppm is an arbitrary milestone that we'll blow right past on our way to 450 ppm within a few decades. This is an unprecedentedly fast rate of increase and it's getting faster. Not all measuring stations are exactly the same: A NOAA station in the Arctic measured CO2 at 400 ppm last year. [more inside]
posted by Sleeper
on Apr 25, 2013 -
Last fall, the Canadian Space Agency asked students to design a simple science experiment that could be performed in space, using items already available aboard the International Space Station. Today, Commander Chris Hadfield
conducted the winner for its designers: two tenth grade students, Kendra Lemke and Meredith Faulkner, in a live feed to their school in Fall River, Nova Scotia. And now, we finally have an answer to the age-old question, What Happens When You Wring Out A Washcloth In Space? [more inside]
posted by zarq
on Apr 18, 2013 -
Is Psychometric g a Myth?
- "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth
approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g
." [more inside]
posted by kliuless
on Apr 11, 2013 -
"Brain training games don't actually make you smarter.
" Looking at recent meta-analyses and replication attempts of studies showing increased cognitive abilities gained from brain-training games, the New Yorker article comes to the conclusion that the results are suspect and these games haven't been shown to improve cognitive abilities broadly. Currently, brain training is a multi-million-dollar business.
posted by tykky
on Apr 9, 2013 -
The Cambridge University Library houses the world's largest collection of Charles Darwin's letters: more than 9,000 of the 15,000 letters he is known to have written and received in his lifetime. They've been posting them online since 2007 (previously on MeFi)
, in the Darwin Correspondence Project
, where we can now read and search the full texts of more than 7,500 letters, and ﬁnd information on 7,500 more -- all for free. This weekend, they added nearly all of the Darwin-Hooker letters
: Over 1400 pieces of correspondence between Darwin and his closest friend, botanist Joseph Hooker. [more inside]
posted by zarq
on Mar 31, 2013 -