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Coinbase Global has removed ‘how to buy’ instructions for at least three crypto tokens which have been the subject of ‘rug pull’ warnings that investors may lose their money, saying on Thursday it plans to improve safeguards. Jaclyn Sales, a spokesperson for Coinbase, said the links were removed from the cryptocurrency exchange’s website after they were brought to its attention this week by Reuters. Nasdaq-listed Coinbase features pages offering tips on investing in tokens and the pages in question were informational rather than making them available to trade on its app or wallet.

“Now, anyone with internet access and a web browser can enjoy reading a high quality up-to-date copy of Feynman’s legendary lectures.


France’s Defense Ministry oversees development of a biomimetic drone whose resemblance to birds and insects increases its stealth operation.

The potential of quantum computers to solve problems that are intractable for classical computers has driven advances in hardware fabrication. In practice, the main challenge in realizing quantum computers is that general, many-particle quantum states are highly sensitive to noise, which inevitably causes errors in quantum algorithms. Some noise sources are inherent to the current materials platforms. de Leon et al. review some of the materials challenges for five platforms for quantum computers and propose directions for their solution.

Science, this issue p. eabb2823.