Science
No, they’re not a mirage — learn how these ingenious ice towers are helping communities preserve water for dry times
Using glacier water and pipes (with a big boost from gravity), Indian engineer Sonam Wangchuk has devised a way to store water in the dry high desert.
Growing up in Sierra Leone, David Sengeh knew all too many amputees. Now studying at the MIT Media Lab, he talks about his idea of redesigning the socket that connects an artificial limb to a human body — and his dream of creating custom-designed, low-cost, comfortable sockets that 3D printing technology could make accessible to anyone, anywhere.