News

  1. Knotty DNA offers cancer-drug target

    Agents that bind to knots in the normally linear DNA sequence seem to prevent the expression of cancer-causing genes.

    By Damaris Christensen
  2. Paleontology

    Rocks yield clues to flower origins

    A distinctive organic chemical related to substances produced by modern flowering plants has been found in ancient fossil-bearing sediments, possibly helping to identify the ancestral plants that gave rise to flowers.

    By Sid Perkins
  3. Paleontology

    Fake fossil not one but two new species

    A supposed missing link between dinosaurs and birds that was first unveiled in 1999, and revealed to be a forgery soon thereafter, was actually cobbled together from parts of animals from two new species.