圖像加註文字，格蕾絲·貝爾和史蒂文·鮑威爾帶著他們的兒子雨果Article InformationAuthor, 菲莉帕·羅克斯比（Philippa Roxby）
Madeleine Finlay sits down with science editor Ian Sample and science correspondent Nicola Davis to discuss three eye-catching stories, including the impact of a powerful psychedelic on depression, answers on the death of Russian opposition leader Alexei Navalny, and an explanation to the mystery of why humans have chins
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Either way, the delay slots do useful work: they compute the descriptor address and start reading it from memory. By the time the PLA verdict arrives, the hardware is already prepared for whichever path is selected. No cycles are wasted.