All today's stories on newscientist.com, including: The UK's first networked riots, mental abacus needs no words, and taking the sizzle out of the subway
Japan tsunami ripped icebergs off Antarctica
Chunks of ice twice the size of Manhattan Island broke away from an ice shelf under the force of the wave
Using technology to dance a life story
The latest instrument from artist Di Mainstone examines the legacy of a Victorian engineer
NASA bets on metal hydrogen and cosmic gas stations
They may sound implausible, but the space agency is pumping money into these technologies
London unrest: UK's first networked riots
The dramatic unrest in UK cities may be facilitated by social media, but psychological forces are also at work
The ecological legacy of Columbus
In his new book, 1493, Charles Mann examines how colonisation of the Americas irrevocably altered our global ecology
Smart software spots swaying risk of a crushing crowd
A program that monitors crowd movement for signs of danger could save lives by avoiding stampedes
Time-lapse Tuesday: 24 hours on top of the world
Watch a 360-degree view of the stunning landscape around an observatory on La Palma island
The year's best astronomy photos
With judging under way for the 2011 Astronomy Photographer of the Year competition, New Scientist brings you a selection of the best entries
Senator: ISPs hijacking searches is a violation of trust
Senator Richard Blumenthal says that the ISPs and Paxfire ? the firm behind the re-routing of searches ? could be hauled before a Senate subcommittee
Mental abacus does away with words
The technique used by some to do complex mental calculations seems to free mathematics from its dependence on language
Tubular hell: Taking the sizzle out of the subway
Engineers trying to cool underground trains face an implacable foe: the laws of thermodynamics. Justin Mullins reports from deep beneath London's streets
Weeds acquire genes from engineered crops
Genetically modified canola weeds scavenging extra resistance genes is a reminder that genes do get around
US internet providers hijacking users' search queries
Internet service providers in the US seem to be profiting from surreptitiously redirecting users' searches to online retail sites, according to a new study
'Haircuts' identified as a cause of financial crisis
Economic modellers have diagnosed a source of the global financial crisis and prescribed a possible solution
July photo competition winners: Technology
Last month we asked for your best photos on the theme of technology. From cellphones to mechanical war chests, see the winners and runners-up
Australia's overheated climate debate
Climate-change wrangling in Australia has descended into death threats and extreme insults. The science is being drowned out, warns Clive Hamilton
'Private' BlackBerry network won't shield rioters
The messaging services used to help organise rioting in London will be accessible to law enforcement
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