1. China is the key to solving the problem of North Korea.
By Christopher Hill in Project Syndicate
By Kevin Bullis at MIT Technology Review
By Laura Starecheski at National Public Radio
4. Japan is testing underwater turbines to harness the power of ocean currents for clean energy.
By Brian Merchant in Motherboard from Vice
5. Drones are the new tool of choice for biologists and ecologists studying endangered species.
By Aviva Rutkin in New Scientist
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