Plus: California's AI safety bill has passed into law Wrinkles and gray hairs aside, it can be difficult to know how well--or poorly--someone's body is truly aging. A person who develops age-related diseases earlier in life, or has other biological changes associated with aging, might be considered "biologically older" than a similar-age person who doesn't have those changes. Some 80-year-olds will be weak and frail, while others are fit and active. Over the past decade, scientists have been uncovering new methods of looking at the hidden ways our bodies are aging. And what they've found is changing our understanding of aging itself. Can we repair the internet?

California governor Gavin Newsom recently killed SB1047, a first-of-its-kind artificial intelligence safety bill, arguing that its focus on only the largest AI models leaves out smaller ones that can also be risky. Instead, he says, we should pass comprehensive regulations on the technology. Despite claims by prominent opponents of the bill that "literally no one wants this," SB1047 was popular – really popular. It passed the California legislature with an average of two-thirds of each chamber voting in favor. Six statewide polls that presented pro and con arguments for the bill show strong majorities in support, which rose over time.

On Aug. 29, the California Legislature passed Senate Bill 1047 -- the Safe and Secure Innovation for Frontier Artificial Intelligence Models Act -- and sent it to Gov. Gavin Newsom for signature. Newsom's choice, due by Sept. 30, is binary: Kill it or make it law. Acknowledging the possible harm that could come from advanced AI, SB 1047 requires technology developers to integrate safeguards as they develop and deploy what the bill calls "covered models." The California attorney general can enforce these requirements by pursuing civil actions against parties that aren't taking "reasonable care" that 1) their models won't cause catastrophic harms, or 2) their models can be shut down in case of emergency. Legislation from State Sen. Scott Wiener would introduce standards for product safety testing and liability. Many prominent AI companies oppose the bill either individually or through trade associations.