rules
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Nanotechnology
Diversifying DNA origami: Generative design tools rely on grammatical rules to find optimal shapes
(A) The grammar rules in this work include triangulation of surface meshes. The distance d and rotation angle θ are user-defined values. (B) Grammar rules are randomly sampled and applied to evolve the design solution sn during the generation process. Credit: Nucleic Acids Research (2024). DOI: 10.1093/nar/gkae1268 As the name suggests, DNA origami is a fabrication technique in which researchers…
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Environment
Environmental groups challenge updates to California’s low-carbon transportation rules
Credit: Pixabay/CC0 Public Domain A coalition of environmental groups filed a challenge Wednesday to California’s main climate regulator, arguing that recent updates to a major climate change program will cause more pollution in the state’s San Joaquin Valley. The lawsuit, filed in Fresno County Superior Court, requires the California Air Resources Board to “adequately disclose, analyze, and mitigate the significant…
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Chemistry
Chemists say it’s time to break 100-year-old rules and rewrite textbooks
Credit: Pixabay/CC0 Public Domain Chemists at UCLA have discovered a big problem with the basic rules of organic chemistry that have existed for 100 years. That’s not true at all. And they say, “It’s time to rewrite the textbooks.” Organic molecules are primarily composed of carbon and are characterized by having a specific shape and arrangement of atoms. Molecules known…
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Science
US finalizes rules to remove lead pipes within 10 years
Credit: Pixabay/CC0 Public Domain President Joe Biden’s administration on Tuesday finalized a rule requiring the nation’s remaining lead pipes to be removed within 10 years. This is a measure aimed at preventing millions of people from being exposed to toxic metals linked to childhood developmental delays. The policy is a cornerstone of the White House’s environmental justice efforts, as traditional…
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