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extinctions

Paleontologist Pincelli Hull
Q&A

A Rapid End Strikes the Dinosaur Extinction Debate

March 25, 2020

The paleontologist Pincelli Hull has nailed down the timing and speed of the extinction that killed off the dinosaurs — details that carry ominous warnings for today.

Spinning globe highlighting LLVSPs.
geophysics

Continents of the Underworld Come Into Focus

January 7, 2020

Giant blobs nestled deep in the Earth may influence everything from the structure of island chains to mass-extinction events.

planetary science

Asteroid Rate Jumped in Solar System’s Past

January 17, 2019

An analysis of lunar craters has found that we’ve been living in a relatively violent period in cosmic history.

Art for "How Nearby Stellar Explosions Could Have Killed Off Large Animals"
Abstractions blog

How Nearby Stellar Explosions Could Have Killed Off Large Animals

January 15, 2019

Subatomic particles called muons are thought to have streamed through the atmosphere and irradiated megafauna like the monster shark megalodon.

Abstractions blog

Complex Animals Led to More Oxygen, Says Maverick Theory

March 21, 2018

For decades, researchers have commonly assumed that higher oxygen levels led to the sudden diversification of animal life 540 million years ago. But one iconoclast argues the opposite: that new animal behaviors raised oxygen levels and remade the environment.

520px photo of phytoplankton
Abstractions blog

Evolution Saves Species From ‘Kill the Winner’ Disasters

February 12, 2018

Modelers find evidence that a combination of competition, predation and evolution will push ecosystems toward species diversity anywhere in the universe.