Scientists shed light on magnetic mystery of graphite

The physical property of magnetism has historically been associated with metals such as iron, nickel and cobalt; however, graphite – an organic mineral made up of stacks of individual carbon sheets – has baffled ...

Brazil's Petrobras unit reports oil leak

Transpetro, a subsidiary of Brazil's state-run energy giant Petrobras, said Thursday it had detected an oil leak off the coast of Rio Grande do Sul state but did not know how much had spilled.

US striving to prevent WikiLeaks repeat: spy chief

The United States is taking "serious and noticeable" measures to prevent another breach of classified files like the massive WikiLeaks document dump, the nation's spy chief said Thursday.

Visual nudge improves accuracy of mammogram readings

In 2011 -- to the consternation of women everywhere -- a systematic review of randomized clinical trials showed that routine mammography was of little value to younger women at average or low risk of breast cancer.

Detecting detrimental change in coral reefs

Over dinner on R.V. Calypso while anchored on the lee side of Glover's Reef in Belize, Jacques Cousteau told Phil Dustan that he suspected humans were having a negative impact on coral reefs. Dustan—a young ocean ecologist ...

Google+ opens up to teenagers

Google on Thursday opened up Google+ to teenagers, just days after loosening the rules about using real names on the social network.

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