How the gene that has been pegged as a major risk factor for schizophrenia and other mood disorders that affect millions of Americans contributes to these diseases remains unclear. However, the results of a new study by Hopkins provide a big clue by showing what this gene does in normal adult brains. This gene makes a protein that serves as a sort of musical conductor for newly made nerve cells in the adult brain, guiding them to their proper locations at the appropriate tempo so they can seamlessly integrate into our complex and intertwined nervous system. If the protein doesn't operate properly, the new nerves go hyper.

Mosquitoes swarming around nearly 40 percent of the world's population will continue to spread a deadly parasitic disease -- malaria. Now scientists have found a key link that causes malarial infection in both humans and mosquitoes. If this link in the chain of infection can be broken at its source -- the mosquito -- then the spread of malaria could be stopped without any man, woman or child needing to a take a drug.

Six-thousand-year-old pottery from the site of Tell Brak challenges the notion that such cities expanded outwards as a result of dictates from a central authority

Throws copyrights from the train

Analysis A dispute over some open source software used for model railroads resulted in an important decision last week, involving the scope of open source licenses and the remedies available when they are violated.