All Tech Considered

A Volkswagen Passat is tested for exhaust emissions, at a Ministry of Transport testing station in London. In the U.S., a 1998 copyright law prevents safety researchers from accessing the software that runs cars. John Stillwell/PA Photos/Landov hide caption

Atlanta is earning the nickname Silicon Valley of the South, joining spinoffs Silicon Alley in New York and Silicon Prairie in the Midwest. Greg Williams/Flickr hide caption

Customers try out cellphones and tablets in a store in Tehran, in 2012. Financial sanctions make it difficult for U.S. firms to do business in Iran, analysts say. Vahid Salemi/AP hide caption

Wall graffiti at Facebook headquarters in Menlo Park, Calif. The company released a diversity report last month showing that 70 percent of employees are male; African-Americans comprise 2 percent of it workforce. Robyn Beck/AFP/Getty Images hide caption

The rise of ad blockers threatens the business model that drives much of the Internet economy. Danae Munoz/Ikon Images/Getty Images hide caption

Dr. Lisa Dyson is the CEO of Kiverdi, a next-generation sustainable oil company that converts CO2 and waste carbon gases into oils using biotechnology. Maurice Dean/Courtesy of Lisa Dyson hide caption

Apple's senior vice president of Internet Software and Services Eddy Cue speaks about Apple Music during the keynote at the annual developers conference. Justin Sullivan/Getty Images hide caption

Adam Leeb (left), co-founder of Hemingwrite, and contractor Andrew Ku work in the common space area in TechTown Detroit, a nonprofit business incubator. Jason Margolis/NPR hide caption