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People who spend time in aquariums could improve their physical and mental wellbeing, a study has suggested. As well as improving people's mood, the experiment showed "significant" reductions in participants' heart rates and blood pressure, the authors added...
Two scientists at a German university have developed a tool which recognises a person's face in complete darkness. The technology identifies a person from their thermal signature and matches infrared images with ordinary photos...
A controversial statue unveiled by the Satanic Temple at a secret ceremony in Detroit has attracted protests. But who is the goat-headed figure? And what do the elements of the statue symbolise?
The shooting incident took place in the Marietta area of East Texas. Three shots were fired and at least one ricocheted off the shell.
Family members of Osama Bin Laden were killed in a private jet crash in Hampshire on Friday, the Saudi Arabian embassy in the UK has said. It came down near Blackbushe Airport, close to the Surrey border, killing the pilot and all three passengers.
Nasa's New Horizons spacecraft has begun the most intense period of its encounter with Pluto. The probe is set to hurtle past the dwarf world on Tuesday, grabbing a mass of pictures and other science data...
Google is holding seven public meetings across Europe to debate issues raised by the "right to be forgotten" ruling. The ruling by the European Court of Justice lets people ask Google to remove some types of information about them from its search index...
How much does the earth weigh? According to Terry Quinn, emeritus director of the International Bureau of Weights and Measures, the Earth weighs about 7,000,000,000,000,000,000,000,000 Kg.
Intel has launched a generation of processors with the smallest transistors ever featured in a commercial product. The Core M chip is the first in the family of Intel's next-generation Broadwell processors...
Thousands of Britons could be inadvertently sharing their digital secrets with anyone who knows where to click, suggests a BBC investigation. At risk are photographs, home videos and music collections as well as scans of documents such as passports, tax forms and other sources of personal data.
As drugs - both legal and illegal - pass through us, they enter the UK's waterways. But can this really lead to a change in the feeding habits, and even the sex, of wildlife? Most people go to a music festival for the music, the mud and the social scene...
William Meredith, from Hillview, Kentucky, was subsequently arrested by police. According to local media, he was arrested and charged with first degree criminal mischief and first degree wanton endangerment.
In the US, poverty, deprivation and exploitation draws thousands of its own children down into a dark underworld that offers few ways out. It is a world few Americans are aware of. But tens of thousands of American children are thought to be sexually exploited every year.
Police are searching for a man who failed to rob a sandwich shop in Rhode Island after being ignored by the teenage employees. The suspect entered a Subway store on Monday, and demanded money from the two employees who "did not respond", according to police...
Russian President Vladimir Putin "personally ordered" the killing of Alexander Litvinenko, the inquiry into the former spy's death has heard. Ben Emmerson QC, for Mr Litvinenko's family, said in his closing statement that Russian state responsibility had been proven "beyond reasonable doubt"...
The object, believed to be part of a wing, left Reunion in the Indian Ocean on a flight to Paris on Friday evening. From there it will be transported to a defence ministry laboratory in Toulouse for analysis.
Without a clever algorithm, graph cycle detection takes a lifetime. Tarjan's approach in PHP: https://vacilando.org/article/php-implementation-tarjans-cycle-detection... …...
In the mathematical theory of directed graphs, a graph is said to be strongly connected if every vertex is reachable from every other vertex. The strongly connected components of an arbitrary directed graph form a partition into subgraphs that are themselves strongly connected.
 cycle graph theory

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