Some fresh bookmarks from delicious.com

• The Economist: Printing body parts – A machine that prints organs is coming to market. Simple tissues to begin with, but larger organs should be possible, too.
• NY Times: When It Comes to Salt, No Rights or Wrongs. Yet. – New US dietary guidelines due this spring may lower the recommended level of salt. Is this going to be a repeat of the low-fat debacle, where the advice actually led to worse diets?
• Wired: How Google’s Algorithm Rules the Web – Google's basic algorithm is being tweaked continuously, teaching it about names, synonyms, context etc. There are so many changes to test that on most Google queries, you’re actually in multiple control or experimental groups simultaneously.
• Fortsatt kaos i tågtrafiken – SJs tåg kan på en dag dra på sig uppemot 30 ton is, som måste tinas innan tåget kan tas in på verkstad för service. Avisning kan ta 4 till 8 timmar.
• SJ skyller på regeringen – Tågnätet är överlastat och det satsas för lite på underhåll. Tågen byggs och testas i Mellaneuropa där det visserligen kan bli kallt men inte så här fuktigt.
• The Story of P(ee) – In which phosphorus, a substance present in every living cell, is being used up and flushed away. The world’s supply of phosphate rock, the dominant source of phosphorus for fertilizer, is being rapidly — and wastefully — drawn down. By most estimates, the best deposits will be gone in 50 to 100 years.