The nuclear waste repository in Finland designed to outlast modern civilisation

The first engineered structure built to last for 100,000 years is about to begin operations. The hope is that Onkalo, deep below ground in Finland, will offer a safe place for the country to store nuclear waste

芬蘭Onkalo處置庫把核廢料深埋地下400多米，用銅罐、膨潤土和穩定基岩構成多重屏障，試圖在十萬年以上尺度上封存放射性物質。文章通過德國Asse II的失敗教訓和法、瑞、美等國的不同方案，說明深時工程真正的難點在於長期安全與未來世代的信息傳遞。