Around 80 million years ago, as tyrannosaurs ruled the Northern Hemisphere, Llukalkan aliocranianus - or the ‘one who causes fear’ - flourished in the southern continents.
Lightning strikes - perhaps a quintillion of them, occurring over a billion years - might have provided sparks of life for the early Earth by unlocking phosphorus, says new research.
On Good Friday, March 27, 1964, south-central Alaska heaved under one of the most powerful earthquakes ever recorded, registering a 9.2 on the Richter scale.
A new study documents the distribution of supercell-tornado wind intensities and sizes, revealing that most are much stronger than damage surveys indicate, with more than 20% of tornadoes potentially capable of causing catastrophic EF-4/EF-5 damage.
In early 2020, satellite data showed a decline in air pollution coinciding with Covid lockdowns. One year later, as lockdown restrictions loosen and regular activity resumes, air pollution is bouncing back to pre-Covid levels.
Fossilized plants found in the rocks and soil beneath Greenland ice suggests the ice melted at some point in the last million years and may do so again.