As we are embroiled in a worldwide COVID-19 pandemic, it is important to know the basics of these tragic viral infections and why the medical community...
A new study published in Nature describes the discovery of 13 fossilized teeth from the Ledi-Geraru site in Ethiopia. They have been dated to between...
Natural stone arches are commonly made of sandstone or limestone and are found in coastal cliff areas that can be eroded by wave action. Other arches...