The Download: weight-loss drugs slowing aging and carbon dioxide batteries

Plus: OpenAI has released 377 new math findings, further rattling the field. Popular weight-loss drugs may do more than help people shed pounds. They might also slow the aging process. Drugmakers Eli Lilly and Novo Nordisk say patients taking their GLP-1 drugs age less quickly, according to molecular "aging clocks" that track changes in DNA or levels of key proteins. The findings add to speculation that GLP-1 drugs could be acting on basic causes of aging and might be true longevity treatments. But how much can we read into these results?