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.

Cirrus clouds, the thin wisps of vapor that coalesce in the upper layers of the troposphere and trail across the sky, often more than 10 miles above the Earth's surface, influence our global climate, cooling the planet by reflecting incoming solar radiation and warming it by trapping outgoing heat.

Understanding the mechanisms by which these clouds form would help scientists make accurate predictions about future climate patterns.

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. 

Men who experience sexual harassment are far more likely than women to induce vomiting and take laxatives and diuretics - purging - in an attempt to control their weight, according to a new psychology paper.

The African clawed frog (Xenopus laevis) and Budgett's frog (Lepidobatrachus laevis) differ in diet and last shared a common ancestor about 110 million years ago but what they were found to have in common could help researchers on the path to prevention of intestinal birth defects. 

Like most tadpoles, Xenopus exist primarily on a diet of algae, and their long, simple digestive tracts are not able to process insects or proteins until they become adult frogs. Budgett's is an aggressive species of frog which is carnivorous – and cannibalistic – in the tadpole stage.