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The circumference of the Earth was measured a very, very long time ago — in the 3rd century BC. How do you think they might have done it back then?” About 2,250 years ago, Alexandria in northern Egypt was one of the most important centers of knowledge in the ancient…
In this article, you will read news about research conducted on spider webs that are millions of years old. Have you ever touched a spider web? If you have, you know that, despite being somewhat sticky, it can easily crumble. That being the case, you might find it hard to…