A 250-day experiment using a ring laser achieved unprecedented accuracy in measuring Earth's axial wobble (nutation and precession), surpassing previous gyroscope and ring laser technologies by a ...

What is the chemical composition of the Earth's interior? Because it is impossible to drill more than about ten kilometres deep into the Earth, volcanic rocks formed by melting Earth's deep interior ...

Much of our understanding of Earth's past is derived from stratigraphic records exposed in rock outcrops or recovered from drilled cores. These records span immense time intervals, from thousands to ...

We know Earth’s rotation on a cosmic scale, but seeing it close up requires quantum mechanics. Interferometry is the use of light waves, sound, etc., to identify changes in matter or motion. New ...

Environmental monitoring professionals operate within an increasingly dense ecosystem of satellites, in situ sensors, radars and drones. These remote sensing networks generate continuous streams ...

The Paris Agreement says that we should reduce the emission of greenhouse gases to limit the rise in global temperature to 2 degrees Celsius. But do we have the measurement methods needed to achieve ...

Revealing the deepest point on Earth and the methods used to measure it accurately. Fears are brewing over an oil-price shock that could rattle markets and the economy Trump threatens to halt federal ...