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A new biologic logic gate based on proteins can perform binary calculations, serving as the first "cellular calculator," researchers say. Various combinations of components can be arranged into circuit elements, leading to specific metabolic processes inside a cell. The setup can answer mathematical questions in a similar fashion to a computer. Bioengineers led by Martin Fussenegger at ETH Zurich built a molecular logic gate using two substances as the transistor elements: the molecule phloretin, which is used to activate nerve fibers and comes from apples, and the widely used antibiotic erythromycin. The substances work as Boolean switches.

"If there was a single nerdy subtext that Bill Gates brought to his closing keynote at the SXSWedu conference in Austin, it was the importance of data. Useful data. Education data."

"In recent years, researchers in the messy world of biology have been able to build systems that function like the clean, binary switches on computer chips-and we've covered a number of reports in this area. Unfortunately, most of these share a significant limitation: they rely on proteins from bacteria that act as switches to turn genes on and off under specific conditions. We know about only a limited number of these genetic switches, which may set a severe limit on the number of logical operations we can string together inside a cell."

The Shared Learning Collaborative, a Gates Foundation-funded initiative, rebranded itself this week. There's a new name - inBloom, Inc. - but the mission and plans remain the same, the new non-profit insists. That mission is to build an open source, cloud-based education data infrastructure in the hopes of addressing a number of problems schools face: the lack of data interoperability between the various databases and software systems that they utilize and the merits of spending money to update outdated administrative IT (versus, say, buying instructional - or other - tech and/or versus spending money on something altogether non-tech).

As a serial entrepreneur and dotcom millionaire, Neil Patel can afford to be picky about his choice of luxury residence. But instead of a country mansion, penthouse apartment or gated community in the suburbs, the founder of internet start-ups KISSmetrics and Crazy Egg has set up home in a location he says best suits his hectic work schedule -- the Hyatt Hotel in downtown Seattle. "I bought a place in a hotel because its convenient for me," says the 27-year-old, who often finds himself working more than 70 hours a week.

Secretariat was famous for coming up from behind in a race to win, and the same may be true for the U.S. in the global push to build exascale technologies. Because for now, when it comes to delivering the needed funding to build these systems, the U.S. is just getting out of the gate.