When something is this far outside the bounds of anything we’ve seen before, explanations are unlikely to come quickly, but a few pieces of the puzzle have emerged.

When something is this far outside the bounds of anything we’ve seen before, explanations are unlikely to come quickly, but a few pieces of the puzzle have emerged.
Expedition member Chris Blakeley in the entrance to the world’s northernmost known cave, found on the Wulff Land…
The Chicxulub asteroid brought the age of the dinosaurs to an end ROGER HARRIS/SCIENCE PHOTO LIBRARY The asteroid…
The ice floe cracks up around the Endurance Royal Geographical Society After the British ship Endurance (pictured above)…
Earth was once covered by a global magma ocean, which later cooled and crystallised – now traces of…