Venezuela Opposition Seeks New Polls, Military Help, Against Maduro

Venezuela's opposition, still smarting from its failure to remove President Nicolas Maduro last year, installed a new congress head on Thursday who demanded across-the-board elections and sought military help to end “dictatorship.”

In a renewal of Venezuela's bitter politics after the holiday lull, the ruling Socialist Party responded that the National Assembly was in contempt of the law.

Maduro forecast its imminent “self-dissolution.”

Divided opposition

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Scientists use light to control the logic networks of a cell

Proteins are the workhorse molecules of life. Among their many jobs, they carry oxygen, build tissue, copy DNA for the next generation, and coordinate events within and between cells. Now scientists have developed a method to control proteins inside live cells with the flick of a switch, giving researchers an unprecedented tool for pinpointing the causes of disease using the simplest of tools: light.

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