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  1. Evolution: out of the ocean.
    Casey W CW Dunn

    Curr Biol 23(6):R241-3 (2013) PMID 23518055

    New analyses suggest that animals colonized land sooner than previously thought, and maybe even before embryophytes (land plants). This has important implications for our understanding of the historical interactions of terrestrial organisms with each other and their physical environ...
  2. Polo-like kinases.
    Conrad C von Schubert and Erich A EA Nigg

    Curr Biol 23(6):R225-7 (2013) PMID 23518048

  3. Evolutionary Genetics: Big Effect of a Small RNA.
    Artyom A Kopp

    Curr Biol 23(6):R247-9 (2013) PMID 23518058

    A new study demonstrates that tissue-specific changes in the expression of a microRNA contribute to morphological variation in nature. This and other examples suggest that the evolution of microRNA-regulated gene networks may follow the same general principles as the more familiar re...
  4. Reptiles.
    Richard R Shine

    Curr Biol 23(6):R227-31 (2013) PMID 23518049

    We loosely call 'reptiles' are not particularly closely related to each other (Figure 1). On the evolutionary tree, some of them (dinosaurs, crocodiles) are much more closely related to birds than to the other animals that we call reptiles. Other reptiles are the descendants of very ancient lineages...
  5. Development: CLAVATA1 Joins the Club of Root Stem Cell Regulators.
    Elisabeth L EL Williams and Ive I De Smet

    Curr Biol 23(6):R245-7 (2013) PMID 23518057

    Stem cell maintenance and daughter cell differentiation is essential for root and shoot development. Genetic and physical interaction of the receptor-like kinases ACR4 and CLV1 bring a new player to the field of distal stem cell control in the primary root tip. Copyri...
  6. Membrane Remodeling: FisB Will Do In a Pinch.
    Irene S IS Tan and Kumaran S KS Ramamurthi

    Curr Biol 23(6):R251-3 (2013) PMID 23518060

    Remodeling of membranes by fission or fusion has been extensively studied in eukaryotes, but proteins directly responsible for mediating such events in bacteria have not been discovered. A recent report identified a protein in Bacillus subtilis that exploits an affinity for a specif...
  7. Motivational neuroscience: instant desire for something you know is bad.
    Jonathon D JD Crystal

    Curr Biol 23(6):R239-41 (2013) PMID 23518054

    Avoiding what you know is bad is a major challenge for recovering addicts. New research suggests that powerful desire can develop even for cues that have always been repulsive. Memories about learned cues can promote addiction in certain conditions. Copyright © 2013...
  8. Sensory biology: listening in the dark for echoes from silent and stationary prey.
    Gareth G Jones

    Curr Biol 23(6):R249-51 (2013) PMID 23518059

    New research shows how bats use echolocation unexpectedly to detect silent and stationary prey in darkness. Bats may use acoustic search images to identify potential prey when prey-generated noises, visual and olfactory cues are absent. Copyright © 2013 Elsevier Ltd....
  9. Memory reconsolidation: time to change your mind.
    Matthew R MR Bailey and Peter D PD Balsam

    Curr Biol 23(6):R243-5 (2013) PMID 23518056

    A new study shows that temporal expectations about threats are a key part of fear memories and that changing this temporal expectation is enough to trigger the updating and reconsolidation of a previously learned fear. Copyright © 2013 Elsevier Ltd. All rights reserv...
  10. Animal behaviour: monarchs catch a cold.
    Charalambos P CP Kyriacou

    Curr Biol 23(6):R235-6 (2013) PMID 23518052

    The spectacular migration of the Monarch from northeastern America to its overwintering grounds in Mexico requires the butterfly to set its time-compensated compass south in the autumn, then north in the spring for its return home. The stimulus responsible for compass resetting has...