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A large robot, loaded with sensors and cameras, designed to explore the ocean twilight zone. Marine Imaging Technologies, LLC © Woods Hole Oceanographic Institution

The ocean twilight zone could store vast amounts of carbon captured from the atmosphere – but first we need an internet of deep ocean sensors to track the effects

The ocean twilight zone could store vast amounts of carbon captured from the atmosphere, but first we need a 4D monitoring system to ensure ramping up carbon storage does no harm.
Permafrost and ice wedges have built up over millennia in the Arctic. When they thaw, they destabilize the surrounding landscape. Michael Robinson Chavez/The Washington Post via Getty Images

Thawing permafrost is roiling the Arctic landscape, driven by a hidden world of changes beneath the surface as the climate warms

Ground is collapsing and massive lakes are draining in a matter of days. Thawing permafrost is having profound effects on the region and its infrastructure.
This man visited the Soviet embassy in Mexico City while Lee Harvey Oswald was in Mexico in 1963. Officials thought it might be Oswald. Corbis via Getty Images

JFK conspiracy theory is debunked in Mexico 57 years after Kennedy assassination

In 1967 a Mexican reporter told the CIA he had met Lee Harvey Oswald in Mexico City just before the JFK assassination. New research and recently declassified intelligence pokes a hole in his story.
The universe is home to a dizzying number of stars and planets. But the vast bulk of the universe is thought to be invisible dark matter. Illustris Collaboration

Why do astronomers believe in dark matter?

Why do astronomers believe there’s dark matter when it cannot be directly detected? Let’s look at the evidence, and see what dark matter’s presence means for our universe.

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