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Cell Phones Monitor Water, Soil on African Farms [Q&A]

Pulsepod, a cellular-enabled system for low-cost environmental sensing. (Photo: Adam Wolf)

When he was in elementary school, Kelly Caylor built a weather station in his parents’ Tallahassee, Florida backyard. Decades later, he’s distributing high-tech environmental sensors, or “pods,” throughout sub-Saharan Africa. Unlike the DIY contraption he built as a student, these pods are smart, high-tech, and talkative. Now an ecohydrologist at Princeton University, Caylor wants to [...]

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Observations

Do Words Match Deeds for WhatsApp CEO?

WhatsApp

Before Jan Koum sold his company, WhatsApp, to Facebook for a mind-numbing $19 billion, he had a Post-It note affixed to his desk—put there by WhatsApp co-founder Brian Acton—that set out the company’s philosophy: “No ads, no games, no gimmicks.” Facebook relies heavily on all three. The contrast between the business model and philosophy of [...]

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