informatix: Dinosaurs were killed by 'colossal bad luck': Prehistoric creatures may have survived if the Earth was struck by an asteroid earlier

A study led by the University of Edinburgh says the dinosaurs may have survived if the asteroid struck several million years earlier or later
Many experts agree that an asteroid strike that hit what is now Mexico, caused the demise of many dinosaur species 66 million years ago
Creatures were already suffering environmental upheaval - with wide spread volcanic activity and changing temperatures - which left them vulnerable
If the asteroid impact had come a few million years earlier, when the range of species was bigger and food chains more robust, they may have survived
If it had come later in history when new species had been given the chance to evolve, they might have escaped extinction, the experts said

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