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Earth


— Science

Earth's magnetic field may be more than 750 million years older than previously thought

The Earth's magnetic field is crucial to life on the planet. It keeps out harmful solar winds, which would strip away our atmosphere and surface water and bombard us with radiation if left unchecked. A new analysis of zircon minerals suggests that the field originated at least 4.2 billion years ago – a hop after the planet formed in the geological timeline, and much earlier than previously thought.

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— Environment

Researchers say Earth is entering a sixth mass extinction event

While there is still much conjecture about the causes of some mass extinctions, it is generally believed that they can occur when a biosphere under long-term stress is subjected to a short-term shock. In 1982, Jack Sepkoski and David M. Raup published a paper identifying five mass extinction events throughout Earth's history. Now a team of researchers claims that we are entering a sixth mass extinction event, which threatens our very existence.

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— Space

UrtheCast releases first Ultra-HD full-color video content from the International Space Station

Today, Canadian company UrtheCast is celebrating the release of three full-color videos shot from its Ultra HD Iris imaging device, mounted on the exterior of the International Space Station (ISS). The videos are but a small taste of the high-quality, near-live streams that the company is planning to make available to the world with the full launch of the UrtheCast Earth-viewing platform.

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