Metra’s diesel-engined commuter trains are familiar sights in and around Chicago, and so is the smell of spent diesel that surrounds them – but a new battery-electric FLIRT locomotive from Stadler is about to change all that, and it’s set to arrive this week.
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US energy department warns of potential for outages in PJM Interconnection, serving 67 million from DC to Chicago
The risk of power outages is expected to escalate across a broad swath of the United States on Wednesday as intense heat will test the capacity of electricity supplies serving millions of homes and businesses from the midwest through the mid-Atlantic.
The US Department of Energy warned of the potential for heightened blackout risks in the PJM Interconnection, the largest US electric grid, which serves 67 million people in a territory stretching from Washington DC to Chicago.
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© Photograph: Nam Y Huh/AP
© Photograph: Nam Y Huh/AP
© Photograph: Nam Y Huh/AP
Three missing rulers reveal that Assyria’s official royal chronology may have concealed a more contested political history. For nearly a century, historians have treated the Assyrian King List (AKL) as the standard chronology of Assyria’s rulers, particularly during the empire’s later history. But evidence drawn from inscriptions, tablets, and damaged monuments suggests that this official [...]Researchers demonstrated that braiding and fusing particles known as non-Abelian anyons can perform every operation required by a quantum computer. A quantum computer becomes broadly useful only when it can perform any computation rather than a limited set of specialized tasks. Physicists have now demonstrated that unusual quantum objects called non-Abelian anyons can provide that [...]
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