Carbon dioxide levels usually peak in May, but 2025’s reading was like no other

DINAH VOYLES PULVER   USA TODAY (eu.usatoday.com) Video: https://www.usatoday.com/videos/news/politics/2025/04/30/how-president-trump-impacted-climate-change-policy-so-far/83272613007/ Video: https://uw-media.usatoday.com/embed/video/83272613007?placement=snow-embed An observatory high on Hawaii’s Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time, the May average exceeded 430 parts per million, reported scientists… Continue reading