Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment Re:Too Many Applications are Stressful and Useless (Score 5, Informative) 256

The biggest name schools aren't so expensive. The Ivies, and I assume Stanford, won't leave you with more than ~$20k of debt, and places like Yale and Princeton replaced loans with grants a few years back, leaving you with 0 debt. If you made the mistake of having a college fund, though, the amount they expect you to pay will magically increase by exactly the size of that fund.

True. At Stanford, children from families making less than $100k pay Zero tuition. Children from families that make less than $250k receive academic aid so that they end up paying less than if they had gone to a state school unassisted. I believe Harvard is going to start doing something similar.

http://news.stanford.edu/news/2010/february8/tuition-financial-aid-020910.html

Science

Aussie Scientists Find Coconut-Carrying Octopus 205

An anonymous reader writes with this excerpt from an AP report: "Australian scientists have discovered an octopus in Indonesia that collects coconut shells for shelter — unusually sophisticated behavior that the researchers believe is the first evidence of tool use in an invertebrate animal. The scientists filmed the veined octopus, Amphioctopus marginatus, selecting halved coconut shells from the sea floor, emptying them out, carrying them under their bodies up to 65 feet (20 meters), and assembling two shells together to make a spherical hiding spot. ... 'I was gobsmacked,' said Finn, a research biologist at the museum who specializes in cephalopods. 'I mean, I've seen a lot of octopuses hiding in shells, but I've never seen one that grabs it up and jogs across the sea floor. I was trying hard not to laugh.'"
Space

Big Dipper "Star" Actually a Sextuplet System 88

Theosis sends word that an astronomer at the University of Rochester and his colleagues have made the surprise discovery that Alcor, one of the brightest stars in the Big Dipper, is actually two stars; and it is apparently gravitationally bound to the four-star Mizar system, making the whole group a sextuplet. This would make the Mizar-Alcor sextuplet the second-nearest such system known. The discovery is especially surprising because Alcor is one of the most studied stars in the sky. The Mizar-Alcor system has been involved in many "firsts" in the history of astronomy: "Benedetto Castelli, Galileo's protege and collaborator, first observed with a telescope that Mizar was not a single star in 1617, and Galileo observed it a week after hearing about this from Castelli, and noted it in his notebooks... Those two stars, called Mizar A and Mizar B, together with Alcor, in 1857 became the first binary stars ever photographed through a telescope. In 1890, Mizar A was discovered to itself be a binary, being the first binary to be discovered using spectroscopy. In 1908, spectroscopy revealed that Mizar B was also a pair of stars, making the group the first-known quintuple star system."

Comment Re:How can they tell... (Score 1) 746

Carbon circulates as both C12 and C13 as naturally produced isotopes. Simply due to the lighter mass allowing it to explore a larger diffusion volume per unit time, biological processes are slightly more likely to incorporate a C12 into a reaction than a C13 relative to their natural abundance. This leads to biological material being slightly C12 rich compared to the environmental C12/C13 ratio at the time the carbon was "fixed". Clever use of these isotope ratios is allowing scientists to investigate lots of interesting relationships both in paleontology and current research on photosynthesis. A google scholar search for carbon isotope ratios will explain it better than I can.

Slashdot Top Deals

"How many teamsters does it take to screw in a light bulb?" "FIFTEEN!! YOU GOT A PROBLEM WITH THAT?"

Working...