The problem with dinosaurs is that they lived a very long time ago- between 250 million and 65 million years ago – and the vast majority of our knowledge of them is based on fossilized bones and skeletons, which are all that have survived the ravages of time. So can we tell if dinosaurs were warm or cold-blooded ?
On the face of it there seems little hope of working out precisely how a 75ft long, 50 ton Brachiosaur fed itself. However it is possible to make a few guesstimates, by assuming the present laws of physics and chemistry applied 65 million years ago.
The first modern humans in Europe were hunter-gatherers who arrived around 40,000 years ago. But around 9,000 years ago the first farmers arrived. These farmers came from the Fertile Crescent in the Middle East – but how ?
There are 193 species of monkeys and apes in the world today, but only one of them is hairless: us ! The average person has around 100,000 hairs on his or her head, so why do some men go bald ?
The archaeological evidence revealed that the earliest Neanderthals had lived in Europe about 200,000 years ago. But then, about 30,000 years ago, they disappeared… just at the time when the first modern humans appear in Europe. The question is Why ?
When animals, plants and other organisms die, they typically decay completely. But sometimes, when the conditions are just right, they’re preserved as fossils. In this article we take a look at how that process occurs.
About 10,000 years ago mankind began to abandon hunter-gathering as a way of life for farms and village life. We would naturally assume because it was better, more efficient, healthier. However there are puzzling problems with these reasons.