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...hominin fossils waiting to be discovered. He says paleontologists will continue to scour for remnants in Siberia and other northern regions, where cold weather helps preserve ancient DNA. Most early hominin fossils are from equatorial and tropical regions, where conditions for DNA survival are poor (indeed, although fossil records suggest a distinct hominin species, Homo floresiensis, co-existed with humans in Indonesia, genetic confirmation has proved elusive). (See the top 10 animal stories...
Responsibility for collection development is distributed among HCL’s bibliographers, each of whom is assigned to suggest new collection items from a specific part of the world. Hazen said, “[We take] pride in being able to ferret out both the mainstream and the fringes, presenting a full spectrum of what’s being said and thought and argued.” There are no particular rules by which bibliographers must abide, provided the material is legal. For proposed collection additions, price is more often an issue than objectionable content...
GABA is not the only neurotransmitter system that goes out of whack at puberty, Giedd notes. Recent studies at Harvard suggest that dopamine receptors also temporarily proliferate, a change that might be related to the impulsiveness and risk-taking behaviors seen in teens. These bursts of brain changes seem to be connected to developmentally sensitive periods, says Giedd. Understanding them better just might unlock some of the enduring puzzles of adolescent behavior...
...clear that situation in the Holy Land has any of the four factors that were present in Ireland—particularly when it comes to political leadership and even-handed U.S. support (although the recent diplomatic quarreling between Israel and the U.S. and the calls for a settlement freeze suggest this may change). It is also evident that the Israelis have gotten comfortable with the status quo, and the U.S. and Europe must take measures to change that. The spark to that change can begin with the 42 million members of the Irish-American community. Irish-Americans should unite...
...Europeans have a real love-hate relationship with the two airlines, which offer some of the lowest fares around Europe, but have become infamous for their bare-bones service and exorbitant add-on fees. The numbers suggest that travelers have been happy enough to continue flying with them - their annual passenger load has increased dramatically from a combined 13 million customers in 2000 to more than 100 million today. But passenger complaints have spiked in recent years, too. Since 2005, Ryanair's complaints have increased by 70% and easyJet's are up by a third, according to a report released...