Brainlets (Science News)
Using human stem cells, biologists have grown clumps of tissue with many features of miniature brains. It took two months, and the results are no bigger than B-Bs, but they have several types of tissue found in the brain. We are assured there is no way they can be conscious.
Introvert brains (Discover)
The most widely accepted contribution of Carl Jung to psychology is the division of personalities into extrovert and introvert (or, really, a sliding scale from very extroverted to very introverted, with "ambivert" in the middle). Psychologists agree that the distinction is real. Now, they are finding differences between the brains of extroverts and introverts. There are anatomical differences, and the two groups respond differently to Ritalin: extroverts who watched short movies under the influence of Ritalin (a stimulant) were excited again when they saw the movies again without the drug; introverts were not excited on the second go-around.
Distracting poverty (Science News)
It appears that money worries create a constant drain on intellectual energy. When poor people manage to get ahead some, so their financial worries relax, their IQ scores go up.
Invaders from Mars (us) (Science)
Biochemist Steven Benner of the Westheimer Institute of Science and Technology proposes that, early in the history of the Solar System, Mars was a better place for life to begin than Earth was. So, he says, it may be that life started on Mars, then came to Earth on a meteorite.
Greenland canyon (Discover)
Odd as it sounds, they have just discovered the largest canyon on Earth (so far known, anyway). We didn't notice it before because it is under the Greenland ice sheet, and was only discovered by ice-penetrating radar.
Older oceans (New Scientist)
More Greenland geology: Standard geological history had it that Earth's oceans formed around 600 million years after the Earth itself did. But analysis of rocks recently taken from Greenland indicates the oceans may have formed 200 million years earlier, "only" 400 million years after the creation of the Earth.