New El Niño index introduces more robust way to measure El Niño strength
Reports and Proceedings
Updates every hour. Last Updated: 13-Jun-2026 01:15 ET (13-Jun-2026 05:15 GMT/UTC)
Researchers discover that tiny atmospheric particles can have opposite effects on Earth's climate depending on how quickly the atmosphere responds. Why it matters: Aerosols are one of the largest sources of uncertainty in climate projections. This study shows that their impact can change over time, initially warming the atmosphere before later cooling it. The findings could help scientists improve climate models and make more accurate predictions of future climate change.
A three-year study has cracked open the hidden biology behind coral reproduction, revealing hormone cycles that echo those of humans and other animals, and a new way to detect reef distress before it's too late.
New study finds that ancient hominins nearly 800,000 years ago deliberately selected specific basalt sources for different stages of tool production rather than simply using whatever stone was available nearby. By tracing the geochemical “fingerprints” of stone tools to both exposed and now-buried basalt flows, the researchers demonstrated that these hominins possessed detailed environmental knowledge, advanced planning abilities, and long-term technological traditions that were maintained and repeated across generations.