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Cost of the War in Iraq
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Blog Home : July 2009 : 2009-07-27 to 2009-08-02
Shatner recites the LSD poetry of Sarah Palin.
Tom Head, About.com Guide to Civil Liberties
Harvard professor Henry Louis Gates was arrested
earlier this week on his own front porch on a disorderly
conduct charge after being mistaken for a burglar. The charges were later
dropped.
By Kevin Drum
This comes from a Research 2000 poll commissioned by Daily Kos. Apparently a majority of Southerners aren't willing to say that Barack Obama was born in the United States. That's some serious crazy.
Hazel Muir
Icy comets - not rocky asteroids - launched a dramatic assault on the Earth and moon around 3.85 billion years ago, a new study of ancient rocks in Greenland suggests. The work suggests much of Earth's water could have been brought to the planet by comets.
"We can see craters on the moon's surface with the naked eye, but nobody actually knew what caused them - was it rocks, was it iron, was it ice?" says Uffe Grae Jorgensen, an astronomer at the Niels Bohr Institute in Copenhagen, Denmark. "It's exciting to find signs that it was actually ice."
Evidence suggests that the Earth and moon had both formed around 4.5 billion years ago. But almost all the craters on the moon date to a later period, the "Late Heavy Bombardment" 3.8 to 3.9 billion years ago, when around 100 million billion tonnes of rock or ice crashed onto the lunar surface. The Earth would have been pummelled by debris at the same time, although plate tectonics on our restless planet have since erased the scars.
Bob Holmes
It is one of the biggest mysteries in human evolution. Why did we humans evolve such big brains, making us the unrivalled rulers of the world?
Some 2.5 million years ago, our ancestors' brains expanded from a mere 600 cubic centimetres to about a litre. Two new studies suggest it is no fluke that this brain boom coincided with the onset of an ice age. Cooler heads, it seems, allowed ancient human brains to let off steam and grow.
Kate Wong
An experiment that involved shooting stone points into pig carcasses may have solved a 50,000-year-old stabbing.
An injury sustained by a Neandertal who died 50,000 years ago has puzzled scientists for nearly half a century. The individual, found at the site of Shanidar in Iraq and known as Shanidar 3, has a deep slice in one of the ribs, indicating that he was stabbed with a stone implement. The question has been: by whom? There are several possibilities: Either a fellow Neandertal or an early modern human did it intentionally, or the hapless victim himself or a hunting partner inflicted the wound by accident.
A forensic analysis suggests that the weapon wielded in a stabbing attack came from modern humans
Andy Coghlan
WE ARE on the brink of technological breakthroughs that could augment our mental powers beyond recognition. It will soon be possible to boost human brainpower with electronic "plug-ins" or even by genetic enhancement. What will this mean for the future of humanity?
This was the theme of a recent Neuroscience in Context meeting in Berlin, Germany, where anthropologists, technologists, neurologists, archaeologists and philosophers met to consider the implications of this next stage of human brain development. Would it widen the gulf between the world's haves and have-nots - and perhaps even lead to a distinct and dominant species with unmatchable powers of intellect?.....
......he evidence for this plasticity continues to grow. Andreas Roepstorff of Aarhus University in Denmark presented brain scans at the Berlin meeting showing that in people who meditate, the areas of the brain that control breathing are larger than the corresponding areas in people who do not......
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