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A quadcopter about two feet in diameter was found on the lawn inside the White House fence on Monday morning, the Secret Service has reported. In a 3 a.m. news briefing, the Secret Service said "an investigation is underway to determine the origin of this commercially available device, motive, and to identify suspects." The drone did not appear to be a threat to anyone inside, White House spokesman Josh Earnest said. President Obama was in India at the time of the incident.
As nanomachine design advances, researchers are moving from wondering if the nanomachine works to how long it will work -- an important question as there are so many potential applications, e.g., for medical uses including drug delivery and early diagnosis. Scientists observed a molecular shuttle powered by kinesin motor proteins and found it to degrade when operating, marking the first time degradation has been studied in detail in an active, autonomous nanomachine.