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  • 29 Nov 1999

    Some ovenbird species make nests lined with grass or snake skin, others adorn their homes with elaborate domes or awnings. From the array of domestic styles, researchers have deduced the likely order of branchings of this common bird's family tree.

  • 18 Oct 1999

    Since the hounds picked up its scent again last July, an iceberg the size of Rhode Island has sparked growing unease as it inches toward the busy shipping lanes off the tip of South America. Now the berg, dubbed B-10A, has a companion: A-22B, a similarly sized superberg.

  • 14 Sep 1999

    FAIRBANKS, ALASKA--Japan and the United States have launched a $32 million research center to plumb the consequences of climate change in the Far North.

  • 20 Aug 1999

    Researchers have found new proof for the theory that natural barriers, such as mountain ranges or dry areas, can cause the birth of new animal and plant species.

  • 27 May 1999

    A new topographic map has provided the sharpest views yet of the martian landscape, including the plateaus and lowlands that hint at the processes that shaped the planet.

  • 15 Apr 1999

    Scientists have made a dazzling find in the sediment below the waters of Namibia's Skeleton Coast: a new species of bacterium whose diameter is about 100 times larger than that of the average bacterium.

  • 22 Jan 1999

    Respiratory physiologist John Ruben has cast a whole new light on the controversy over whether dinosaurs were warm-blooded.

  • 3 Dec 1998

    Minnesotans may dream of relaxing winter escapes to the Caribbean, but not the American redstart. Winters down south are a time of stress for this migratory songbird, and a lean winter can dampen reproductive success during the next breeding season up north.