• Gravitational anomaly in 2007 hints at rapid changes near Earth’s core

    ByTeo Blašković

    A gravity anomaly recorded by NASA–German GRACE satellites in early 2007 over the Atlantic Ocean points to mass redistribution near Earth’s core–mantle boundary, around 2 700–2 900 km (1 700–1 800 miles) deep. Researchers suggest a perovskite-to-post-perovskite mineral phase change produced decimetric boundary shifts, offering the first evidence that deep mantle processes can unfold within just a few years and potentially affect Earth’s magnetic field.

  • Melting glaciers alter Earth’s gravity

    ByChillymanjaro

    Melting glaciers can alter Earth’s gravity field, scientists have found, a discovery that is shedding light on when Greenland and Antarctica began heavily melting. Knowing the timing of this melting could help climate scientists make better estimates of the potential

  • Scientists claim that Earth is not expanding

    ByChillymanjaro

    Since Darwin’s time, scientists have speculated the planet might be expanding or contracting. Even with the acceptance of plate tectonics half a century ago, which explained the large-scale motions of Earth’s outermost shell, the accusations persisted; some Earth and

  • Groundwater vanishing in Central Valley

    ByEye

    Over-pumping is pulling vast and unsustainable amounts of groundwater from the heart of California farming, the Central Valley, a new UC Irvine satellite study shows – with enough lost over four years to fill two-thirds of Lake Mead. The phenomenon shows no…