Without deep cuts to emissions, there's a chance Earth could embark on a dangerous "hothouse trajectory" to complete climate chaos. That's one takeaway from a new report that found 22 of Earth's 34 "vital signs" are flashing red, signaling that the planet is in distress.
Earth's vital signs are markers of planetary health, such as atmospheric carbon dioxide and methane concentrations, ocean heat content, sea level fluctuations, and the yearly percentage of extremely hot days relative to the 1961-to-1990 average. Most of these markers hit record levels in 2024, and 2025 looks like it's on the same trajectory, according to the report, published today (Oct. 29) in the journal BioScience.
