1. This man is the first person with a missing lower leg to control a robotic replacement with just his mind.
Surgeons rewired his nerves so that signals went to his healthy hamstring muscle rather than trying to get to his damaged ankle. Sensors on his hamstring then detected those tiny electric signals and turned them into movements of the robotic leg.
- At least 15 people were killed after a suicide bomber attacked a Shiite Muslim procession of hundreds of people in Nigeria. ›
- Turkey hopes to ease tensions with Russia after it shot down a Russian warplane earlier this week. The countries have differing accounts of the incident. ›
- And how well do you know what happened in the news this week? Take our quiz. ›