Republican Senate leaders, shown here speaking to reporters after the Republican Policy Committee luncheon at the Capitol Wednesday, are finalizing details of a tax plan they hope to vote on this week. Chip Somodevilla/Getty Images hide caption

Bacterial cells can now read a synthetic genetic code and use it to assemble proteins containing man-made parts. Gary Bates/Ikon Images/Getty Images hide caption

Trio da Kali and Kronos Quartet's album, Ladilikan, is available now. Jay Blakesberg/Courtesy of the artist hide caption

Harvard graduate student Jack Nicoludis (right), who helped organize a campus protest on Wednesday, says the House tax bill would more than double his taxes. "This plan is going to be disastrous for higher ed," he says. Chris Arnold/NPR hide caption

The hurricane knocked out power to millions and destroyed water infrastructure. It also tore up plants across the island, washed soil off fields and knocked down fences. Carlos Giusti/AP hide caption