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Stunning footage of comb jellies captured at the New England Aquarium in Boston.

February's issue of Scientific American features a beautiful close-up image of a placenta taken by Norm Barker, associate professor of pathology and art as applied to medicine at the Johns Hopkins University School of Medicine. Barker specializes in photo-microscopy and natural science photography, and his work appears in the permanent collections of more than 40 museums, including the Smithsonian, the American Museum of Natural History and the Science Museum in London.

By Heidi Ledford of Nature magazine The perennial grass Miscanthus

By Heidi Ledford of Nature magazine The perennial grass Miscanthus

At last, the field of genomics has something to offer Cheech and Chong. DNA sequencing hit a new high last night with the midnight release of the Cannabis sativa genome.

By Daniel Cressey of Nature magazine Scientists are increasingly turning to non-invasive imaging to further the '3Rs' of work in animals--replacement, refinement and reduction. [More]

This spring, two red-tailed hawks took up residence on the 12th floor ledge of the New York University president's office at Bobst Library. Their nest and the three eggs inside made headlines in The New York Times , which set up a camera feed to capture the growing chicks

By Nicola Nosengo of Nature magazine If you are a small animal, it is useful to know whether there is anything around that might want to eat you. [More]

By Marian Turner of Nature magazine Bats use tiny hairs to sense the speed and direction of air flowing over their wings.

A painting that was once a masterpiece can lose its glory after centuries of exposure to the elements.

By Ewen Callaway Nature magazine By transforming cells from human skin into working nerve cells, researchers may have come up with a model for nervous-system diseases and perhaps even regenerative therapies based on cell transplants. The achievement, reported online today in Nature , is the latest in a fast-moving field called transdifferentiation, in which cells are forced to adopt new identities.

By Erika Check Hayden of Nature magazine All science students learn the 'central dogma' of molecular biology: that the sequence of bases encoded in DNA determines the sequence of amino acids that makes up the corresponding proteins. [More]