New Peruvian bird discovered: The vivid yellow Inti tanager

After persuading his parents to bring home a bird feeder from his relatives' hardware store, Kevin Burns became captivated by watching his avian visitors. He would flip through pages in a bulky encyclopedia to know which ...

Dental crowding: Ancient baleen whales had a mouth full

A strange phenomenon happens with modern blue whales, humpback whales and gray whales: they have teeth in the womb but are born toothless. Replacing the teeth is baleen, a series of plates composed of thin, hair- and fingernail-like ...

How the TB bacterium develops rapid resistance to antibiotics

For a slow-growing microbe that multiplies infrequently, Mycobacterium tuberculosis, the pathogen that causes tuberculosis (TB) has long puzzled researchers as to how it develops resistance to antibiotics so quickly, in a ...

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