52-Foot-Tall 'Megaryabies' From Dinosaur-Killing Asteroid Mapped Deep Under Louisiana in 3D
Planet Earth
'This is by far the oldest': Scientists discover 3.47 billion year old meteorite impact crater in Australian outback
Mount Roraima: A 'lost world' isolated for millions of years that indigenous people call 'home of the gods'
Global sea ice levels reach alarming new low
'Iceberg Queen' A23a Runs Aground Off South Atlantic Wilderness
The ancient Egyptian city of Alexandria, the birthplace of Cleopatra, is collapsing into the sea at unprecedented speed
A stunning photo taken from the ISS shows a 'giant jet' of upward-striking lightning towering 50 miles above New Orleans.
Earth from Space: Giant Pyramid-Shaped 'Star Dunes' Slowly Move Across Moroccan Desert
'Primordial' helium left over from the birth of the solar system may be trapped in the Earth's core
Ancient seafloor spreading 15 million years ago caused sea levels to plummet
Italy's ancient Campi Flegrei volcano may be causing devastating eruptions more often than we thought
5-million-year-old tooth from Tennessee belongs to a flying squirrel the size of a house cat
