Changes in the composition of the light of a supernova–an exploding star–reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.

The features of the floor of the Kasei Valles on Mars look just like those at the base of Antarctic ice streams, so it suggests that possibly it was flowing ice that carved the giant Martian channels previously attributed to cataclysmic floods.

Vivien Thomas, who had no formal medical training, in struggling against overwhelming odds, he became a cardiac surgeon and eventually to receive an honorary doctorate from Johns Hopkins University.

Strawberries, unlike picking bananas that are green and can be ripened artificially, must be picked when they are fully ripe, and they remain at peak flavor for only four or five days after that.

Ranked among great mathematical scientists such as Archimedes, Kepler, and Newton, Abu Ali al-Hasan ibn al-Haytham, who was born in Iraq in 965 C.E., had experimented extensively with light and vision, laying the foundation for modern optics and also the notion of science being based on experiment as well as on philosophical arguments.

Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the era.

The army cutworm moth is a critical source of fat for as many as a third of Yellowstone National Park’s grizzly bears; they overturn rocks to find them, as many as 40,000 per bear in a single day.

A Food and Drug Administration rule implemented in December 2000 mandates that any new drug that they intend to be used both by adults and children must undergo pediatric study and that its manufacturers list children’s doses on the label.

Turtles, as with other reptiles, can endure long fasts because they can survive on weekly or even monthly feedings; however, when food is readily available, they may eat frequently and grow very fat.

The 151 member governments of the World Bank are expected to increase the bank’s funding by $75 billion, though some United States legislators cite an obstacle to congressional passage being the concern that the bank’s loans will help foreign producers compete with American businesses.