Unfortunately, I cannot create the required summary because the available search results do not include the full text of the article "Safeguarding tailings dams at the climate brink" from the journal Science[2]. The search results contain only the name and a short description, which states that it is a copper tailings dam in the ecologically fragile region of the Qinghai-Tibetan Plateau, which poses a contamination risk to the areas below the dam[2]. I would need access to the full text of the article to create an accurate and factual summary as per your requirements. I recommend that you access the article directly through Science or your institution to provide full content for analysis.