Science

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At first glance, text-messaging health alerts to poor, rural populations with widespread mobile phone use is a no-brainer. But what about the challenges of providing useful information and the simple act of re-charging phones in isolated spots?…

A few facts about dragonflies: they hunt their prey, mate and lay eggs in mid-air. They have eyes that wrap around their head, giving them great visibility. They can fly straight up, straight down, hover like helicopters and…