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Reports on the efforts of the United States National Park Service in helping sharks in Florida succeed in their mating. Factors that affect the mating of sharks; Declaring of an area off-limits to boaters during the mating season of sharks.

Focuses on ecologist Nelson G. Hairston Jr.'s hatching of eggs deposited by a female copepod in a lake in Rhode Island. Lead-isotope dating of the eggs.

Reports on the moving of rocks by ice sheets in Death Valley, California. Explanation of the phenomenon by geologist, John Reid Jr.

Reports on Finnish researchers' claim that Eurasian kestrels locate voles by spotting the latter's trail of urine and feces using their ability to perceive ultraviolet light. Comments of Jussi Viitala of the University of Jyvaskyla's Konnevesi Research Station.

Reports on the Smithsonian Institution National Postal Museum's presentation of the exhibit `Maps on Stamps,' which features stamps collected by Allan Lee. Origins of the stamps.

Focuses on the significance of Spanish mustangs to the Blackfeet Indians of the Great Plains. Historical background; Start of breeding program to restore herds.

Discusses the role of geography in helping to determine an Amish quilt is made in Pennsylvania or in Ohio. Differences in pattern and materials used; Befriending by Amish families who migrated to Holmes County, Ohio of their `English' neighbors; Patterns adopted.

Reports that Jane Renfrew, a University of Cambridge paleoethnobotanist, has combed historical records and archaeological reports to compile recipes `A Taste of History: 10,000 Years of Food in Britain'. Examples of culinary delights.

Reports on the tear-drinking moth `Hypochrosis baenzigeri'. Poking of its proboscis into the eye of an Asian elephant; Search for moisture and salts; Experience of researcher Hiroshi Inoue with the moth.

Reports that telemedicine offers long-range diagnosis. Implication to patients of this medical breakthrough; Receipt by specialists of digital images of MRI, CT and nuclear scans; Length of time before transmission of each scan can be made.

Discusses how the frieze found in the marble mausoleum of C. Julius Zoilos, who died in the Roman city of Aphrodisiacs in 20 B.C., was rearranged. Allegorical figures borne in the frieze; Alignment of the pieces; Fascination by New York University archaeologist Kenan Erim with the object.

Reports on Mexico's Tortilla Project's success in producing a tasty, nutritious tortilla in an efficient and nonpolluting manner. Number of minutes to manufacture corn to tortilla; Development of a machine that turns out 200 pounds of tortillas an hour.

Describes a flower-like fungus in the Colorado Rockies. Similarities and differences between the fungus and real flowers; Destructive effects of the fungus on plants.