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Earth system scientists
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- 1Scientists warn key planetary boundaries have been breached●'Planetary boundaries' necessary for flourishing of life have been breached
New scientific reporting indicates that the 'planetary boundaries' required for life on Earth to flourish have been crossed, according to coverage in The Guardian. Scientists warn that breaching these thresholds — which include climate change, biodiversity loss and other Earth-system limits — increases the risk of irreversible environmental damage. Readers are debating the findings and what they imply for policy and everyday life.
- 2Subduction zone off Vancouver Island found tearing itself apart●Earth is tearing apart beneath the Pacific Northwest Scientists have captured a subduction zone off Vancouver Island in
Scientists have captured a subduction zone off Vancouver Island in the process of tearing itself apart, suggesting these massive tectonic systems may die piece by piece rather than all at once. The finding offers new insight into how subduction zones end over geological time, with implications for understanding seismic hazards in the Pacific Northwest, where the Cascadia zone poses earthquake and tsunami risks.
- 3First radio waves detected from an exoplanet hint at alien auroras●First radio waves seen from an exoplanet hint at otherworldly auroras # science # astronomy https://www. sciencenews.org
Astronomers have picked up radio waves from an exoplanet for the first time, a signal that could indicate auroras similar to those seen on Earth and the solar system's giant planets. The detection opens a new way to study magnetic fields and atmospheres of planets orbiting other stars, and scientists say future observations could reveal more about potentially habitable worlds far beyond our solar system.
- 4Asteroid Bennu may have formed closer to the Sun●Asteroid Bennu may have formed much closer to the Sun than scientists thought
New findings suggest asteroid Bennu, a near-Earth object studied by NASA's OSIRIS-REx mission, may have originated much closer to the Sun than previously believed, challenging existing models of how the solar system's early materials were distributed. Scientists say the asteroid's composition could indicate it formed in a warmer region before migrating outward.