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...women who have approached the producers (you too can apply, via a seven-page pre-interview form obtained through the show's website) gave birth on a toilet, though that seems to be a recurring theme. For the show's third season, which begins in June, "we are pulling back on the toilet births," says Wendy Douglas, a good-humored executive producer for TLC and Discovery Health...
...Pyongyang's Jan. 11 statement seeking a peace treaty only reinforced the impression that the North may want to put the cart before the horse. U.S. officials, sources tell TIME, have tried to communicate to Pyongyang via its key ally, China, that it's nukes first, then everything else (economic and energy aid, negotiations toward a peace treaty, formal diplomatic ties...
...epigenetic changes be permanent? Possibly, but it's important to remember that epigenetics isn't evolution. It doesn't change DNA. Epigenetic changes represent a biological response to an environmental stressor. That response can be inherited through many generations via epigenetic marks, but if you remove the environmental pressure, the epigenetic marks will eventually fade, and the DNA code will - over time - begin to revert to its original programming. That's the current thinking, anyway: that only natural selection causes permanent genetic change. (See "The Year in Health 2009: From...
...even if epigenetic inheritance doesn't last forever, it can be hugely powerful. In February 2009, the Journal of Neuroscience published a paper showing that even memory - a wildly complex biological and psychological process - can be improved from one generation to the next via epigenetics. The paper described an experiment with mice led by Larry Feig, a Tufts University biochemist. Feig's team exposed mice with genetic memory problems to an environment rich with toys, exercise and extra attention. These mice showed significant improvement in long-term potentiation (LTP), a form of neural transmission that is key to memory formation...
DFTD is a virtually unique cancer in that it is spread from animal to animal via biting or other physical contact - one of only three cancers that are thought to spread this way. While some human cancers can be linked to transmissible pathogens - such as cervical cancer, which is caused by the human papillomavirus - in DFTD, infected devils actually transmit the tumor itself to other devils when they bite. (See TIME's video "Saving the Tasmanian Devil...