A team of scientists has detected tiny quantities of the unreactive volcanic trace gases Krypton and Xenon in Earth's mantle, which reveal an isotopic 'fingerprint' matching that of
meteorites.

The researchers say this means the gases that formed the Earth's atmosphere - and probably its oceans - did not come from inside the Earth but from outer space.

The report published this week in the journal Science demonstrates that the age-old view that volcanoes were the source of the Earth's earliest atmosphere must be put to rest, the researchers suggest.

 When it comes to gambling, many millions of people just don't know when to walk away. The behavior can take a tremendous toll on their finances and family life, and currently available treatments are often associated with extremely high relapse rates.

According to new research presented at the annual meeting of the American College of Neuropsychopharmacology (ACNP), however, there may be alternative and surprisingly simple treatments available for gambling addicts--medications that decrease urges and increase inhibitions. In other words, medications often used to treat drug abuse.