Scientists have called it the K-T event (or Cretaceous-Tertiary extinction event), when entire species of reptile-like dinosaurs, which had lived on Earth for 230 million years, vanished. Researchers agree that this mysterious event happened around 66 million years ago, but they remain undecided as to the reasons why.
The Alvarez Hypothesis
The theory that has been most popular over the years is called the Alvarez Hypothesis, which argues that a meteor the size of a mountain collided with the Earth 66 million years ago. The collision released a huge amount of dust and debris, which blocked out the Sun and caused temperatures to plunge below freezing. This led to the extinction of non-avian dinosaurs (dinos not related to birds), and many other species.
Bu hikaye The Week Junior Science+Nature UK dergisinin Issue 61 sayısından alınmıştır.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Giriş Yap
Bu hikaye The Week Junior Science+Nature UK dergisinin Issue 61 sayısından alınmıştır.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Giriş Yap
Camera Obscura
Imagine stepping inside a dark room, where the only source of light comes through one small hole in the wall.
MANCHESTER SCIENCE FESTIVAL
From 18-27 October, shoppers at the Arndale shopping centre in Manchester, England, will face a giant spider.
Should musicians stop touring?
Multiple concerts travelling around the world have a big impact on the environment.
Are ghosts real?
Plenty of people believe in ghosts, but it's hard to find proof.
SMASH STEREOTYPES
In an extract from his prize-winning book, scientist and writer Adam Rutherford shows you how to use the power of science to fight racism. This chapter, titled Myth-Busting, is all about sport.
Animal awareness
What would it feel like to be another animal?
Hamza Yassin
Go behind the camera with a wildlife filmmaker.
WILDLIFE WATCH
Ben Hoare goes on a safari from his sofa to discover how nature documentaries are made.
Big bum breakthrough
A team of researchers who found out that mammals can breathe through their bottoms have won a prize at the lg Nobel awards.
A jaw-dropping undersea snap
A photograph of a Bryde's whale feeding on a heart-shaped \"bait ball\" of sardines has won the Ocean Photographer of the Year contest.
