These mutant nematode worm embryos are genetically identical, but fluorescence imaging shows they are not exactly the same. The pink spots are mRNA molecules involved in gut development. Some twins have spots and some don't, which means some will develop guts and others won't. Arjun Raj hide caption

toggle caption Arjun Raj

Identical Twins Are Not Truly Identical

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Scientific Tinkering Leads To New Cell Insight

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A technician works on a Toyota Prius hybrid at a production facility in Aichi Prefecture, Japan. According to experts, cars like the Prius are the next step in a future that's moving toward vehicles with more robotic-type control systems that can analyze driving conditions and act accordingly. Kyodo/AP hide caption

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Despite Glitches, Electronics Make Cars Safer

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Math Professor Helps Uncover Art Fakes

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A thin (0.1 mm) layer of water that is frozen and examined under polarized light. Courtesy of Rainer Stahlberg and Gerald H. Pollack, University of Washington hide caption

toggle caption Courtesy of Rainer Stahlberg and Gerald H. Pollack, University of Washington

Scientists Keep Water Liquid Far Below Zero Degrees

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The bdelloid rotifer Philodina gregaria. Bdelloid rotifers are tiny invertebrates that reproduce asexually. Courtesy of Micrographia hide caption

toggle caption Courtesy of Micrographia

Listen To Segment: A Long Dry Spell

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Researchers dyed sperm from each deer mouse a different color; in this case, red represents one male and green another. The sperm joined together with their own kind, as seen here, allowing them to swim faster than those that did not cluster together. Heidi Fisher hide caption

toggle caption Heidi Fisher

Sperm Of A Feather Flock Together

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A two-dimensional representation of E8 symmetry, the type of symmetry exhibited by particles in the study. John Stembridge hide caption

toggle caption John Stembridge

Finding 'Beautiful' Symmetry Near Absolute Zero

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Scientist turned director Valerie Weiss discusses a scene with cinematographer Jamie Urman on the set of her film, Losing Control. Courtesy of Richard Salazar hide caption

toggle caption Courtesy of Richard Salazar

Filmmaking Scientist Experiments With Comedy

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Reflecting On A Decade Of Stem Cell Research

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Missing Out By Taking Christmas Off

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Of Fish And Flies: The Evolutionary Role Of Genes

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Stockholm Visit Worth More Than A Nobel

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