Articles tagged with "copper"
CIA’s Kryptos mystery solution heads to auction after 35 years
The CIA’s Kryptos sculpture, a cryptographic artwork created by Jim Sanborn and installed at the agency’s Langley headquarters in 1990, is nearing the end of its decades-long mystery. While the first three of its four coded panels have been solved, the final panel, known as K4, has resisted all decoding attempts despite limited hints from Sanborn. In November 2025, Sanborn plans to auction the handwritten plaintext solution to K4, along with related papers and a copper proof-of-concept plate, with an expected winning bid between $300,000 and $500,000. Sanborn hopes the buyer will maintain the secret and potentially oversee future verification of code-breaking attempts. Over the years, Kryptos has attracted thousands of solvers, including persistent individuals and renewed interest fueled by popular culture references such as Dan Brown’s novels. However, the rise of artificial intelligence has led to many inaccurate attempts, which partly motivated Sanborn’s decision to sell the final solution. Pro
materialssculpturecoppercryptographyart-installationcodebreakingauctionElectrification Won’t Crash On Copper: Debunking Latest Claims - CleanTechnica
The April 2025 paper by Cathles et al., which has gained traction in industry and policy discussions, claims that global copper supply will severely constrain electrification and renewable energy deployment. However, this CleanTechnica article critically examines these assertions and finds them significantly flawed. The paper overestimates copper requirements for energy storage by at least a factor of 100 and also inflates copper needs for electric vehicles (EVs). It neglects important factors such as copper substitution with aluminum and other materials, the rise of zero-copper sodium-ion batteries, and underestimates the impact of copper recycling. Consequently, its conclusions about copper shortages and the need for extensive new mining are deemed not credible. Specifically, the authors assume an unrealistically high copper content of 80 kg per EV, whereas industry trends and innovations suggest much lower usage—potentially as low as 20 to 30 kg per vehicle. Advances such as higher-voltage architectures (800V+), aluminum wiring (already used by
energycopperelectric-vehiclesbattery-technologyrenewable-energymaterials-innovationelectric-motor-designSouth America find 13 million tons in copper, gold, silver deposits
materialscoppergoldsilverminingresourcesgeology