Synthetic silicate nanoplatelets, or layered clay, can stimulate stem cells to turn into bone cells
Image courtesy of Khademhosseini Lab
Researchers at Brigham and Women's hospital have discovered that layered clay-that is, synthetic silicate nanoplatelets used in everything from glass and ceramics to food additives-can induce stem cells to become bone cells without needing any additional bone-inducing factors. In other words, the presence of this synthetic material can coax human stem cells into becoming bone all on its own, and that could have huge implications for the future of tissue engineering.
Grammar On The Brain Electroencephalography readings of the brain suggest it catches grammatical mistakes even when the person is not aware.
Petter Kallioinen via Wikimedia
The brain does all kinds of amazing things while you're not paying attention (you know, like regularly remind you to breathe). But it's also engaged in less critical but equally interesting tasks, like correcting the grammar of the person sitting across from you at dinner. A University of Oregon study has logged hard evidence that the brain processes and compensates for errors in grammar and syntax without your being aware of it.
C. Goldsmith / CDC
The largest current study of a potential AIDS vaccine, a $77 million project led by a Columbia University doctor, has been shut down due to "futility." The patients will be monitored to see any long-term effects, but the message is clear: it doesn't work, shut it down.