'Pestilence', widespread outbreaks of deadly contagious disease, are known throughout history. In popular translations of the Christian Bible, Pestilence is one of the Four Horsemen of the Apocalypse.

Today we call them pandemics but they are nothing like plagues of old, when up to 33% of a population was eradicated, like during the Black Death of the 14th century.

The Carmona necropolis in Spain is a collection of funeral structures built between 200 B.C. and 200 A.D. One of them is known as the Elephant's Tomb because a statue in the shape of an elephant was found in the interior of the structure.

We all know about people’s personalities, and anyone with a dog or a cat will also tell you about their temperaments. More surprising, though, is how many others, from octopuses to frogs and even spiders have them. So why behave according to a personality, when flexibility could allow smarter choices?

Water found on the moon and Earth came from small meteorites called carbonaceous chondrites in the first 100 million years or so after the solar system formed, according to researchers who found evidence in samples of moon dust returned by lunar crews of Apollo 15 and 17.

Comets did not deliver the molecules, they conclude in their Science Express article.

The discovery's telltale sign is found in the ratio of an isotopic form of hydrogen, deuterium, to standard hydrogen. The ratio in the Earth's water and in water from specks of volcanic glass trapped in crystals within moon dust match the ratio found in the chondrites. The proportions are far different from those in comet water. 

While school-age models of atomic nuclei show them as being spherical, like a basketball, they are more like the shape of a football. 

Yet for some particular combinations of protons and neutrons, nuclei can also assume very asymmetric shapes, like a pear, where there is more mass at one end of the nucleus than the other.