Numerous species of benthic foraminifera became extinct during the event, presumably because they depend on organic debris for nutrients, while biomass in the ocean is thought to have decreased.

Dec 22, 2025 · Proposed causes for the extinction of dinosaurs have included everything from disease, heat waves, cold spells, faunal changes, and an asteroid collision during the K–T boundary.

Evidence suggests an asteroid impact was the main culprit. Volcanic eruptions that caused large-scale climate change may also have been involved, together with more gradual changes to Earth's climate …

Why did the dinosaurs go extinct? Learn about the mass extinction event 66 million years ago and the evidence for what ended the age of the dinosaurs.

May 2, 2025 · Many of their descendants—modern birds—are currently threatened by extinction, with hundreds of species at risk due to human activity. This article explores the major extinction events …

The extinction of non-avian dinosaurs approximately 66 million years ago resulted from the Chicxulub asteroid impact and its cascading environmental effects—wildfires, tsunamis, impact winter, and food …

Jul 20, 2025 · Scientific evidence reveals a complex story of the dinosaurs’ end, combining long-term planetary stress with a sudden catastrophic event that reshaped life.

Dinosaurs became extinct about 66 million years ago, and the most widely accepted theory is that a massive asteroid impact was the main cause. This event is known as the Cretaceous-Paleogene (K …

You've probably heard how dinosaurs went extinct: They were all killed one terrible day when a huge object from outer space-a comet or asteroid the size of at least 100,000 Superdomes-slammed into Ear

Dinosaurs went extinct due to a combination of catastrophic events, with the primary cause being a massive asteroid impact that led to severe environmental changes, including blocked sunlight, …