USA NPN National Phenology Network

Taking the Pulse of Our Planet

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The USA-NPN, phenology, and our partners are often in the news. Follow some recent stories below.

Image credit:
Sara N. Schaffer


  • USA-NPN on PBS Nature's American Spring LIVE
    Monday, April 29, 2019

    American Spring LIVE is a three-night NATURE event that presents the change from winter to spring in real time from iconic locations across America. The show aired April 29-May 1 at 8 pm ET on PBS and Facebook. The full episodes can be viewed at The third and final episode on May 1st, "Connections", featured the USA-NPN's Track a Lilac project. This is a special project to invite the public to submit one-time observations of leafing and flowering in lilacs. After testing the waters of citizen science, interested participants are invited to join Nature's Notebook for long-term observations.

  • How typical is this year's spring?
    Wednesday, March 20, 2019
    In places where spring has sprung, how how often have we seen a spring like this one? The USA-NPN's spring leaf out shines light on where leaf out of early season plants has occurred across the country. In the map at left, darker colors represent springs that are unusually early or late in the long-term record. Gray indicates an average spring.
    How typical is this years spring leaf out 2019
  • Did the groundhog get it right this year?
    Saturday, February 2, 2019

    Punxsutawney Phil predicts an early spring this year. Our map of accumulated growing degree days shows he may be right, for parts of the country anyway. See what Nature's Notebook observers are already reporting on plants and animals across the country.

    2019 heat accumulation vs groundhog prognostication

    Tuesday, January 15, 2019

    Observational data stored in the National Phenology Database were used in 13 peer reviewed publications last year, to identify climate drivers of flowering, validate land surface phenology, document shifts in flowering of milkweeds, and more.

  • 15 million records submitted to the National Phenology Database
    Monday, December 17, 2018

    15 million records Nature's NotebookWe've just reached the milestone of 15 million records submitted to the National Phenology Database! These data are freely available for download and exploration in the Phenology Visualization Tool.