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.

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.

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.

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.

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.

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.

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.

Although the turtle has been toothless for more than 150 million years, in some contemporary turtle species the moderately sharp and jagged edges of their horny jaws function for teeth.

After determining the levels of calcium carbonate and the types of fossilized algae present in core samples taken from the bottom of Lake Titicaca in the Andes, a group of scientists was able to reconstruct the history of precipitation in tropical South America over the past 25,000 years.

Scientists have found new evidence of people initially registering emotions like sadness or anger in much the same way as heartburn--by monitoring what's going on within their bodies.