A new study shows that embryonic cells retain a memory of the chemical signals to which they are exposed. Without these memories, cells fail organize into distinct tissue types.
The New York Times
"It was beginning to look hopeless for obese people. Then, in 1995, Dr. Jeffrey Friedman of Rockefeller University discovered what looked like the equivalent of insulin for diabetes—a molecule he called leptin that is secreted by fat cells and tells the brain how much fat the body has."
"Error-free genomes from a broad sampling of vertebrates will enable researchers 'to address questions not possible to [answer] before,' adds neuroscientist Erich Jarvis of The Rockefeller University in New York City, who leads G10K."