Windows to the Universe

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality.
Carlye Calvin/UCAR

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Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality. Carlye Calvin/UCAR

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality. Carlye Calvin/UCAR

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality. Carlye Calvin/UCAR

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality.
Carlye Calvin/UCAR

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality.
Carlye Calvin/UCAR

Pine bark beetles are munching pine trees throughout the Rocky Mountains. Trees that have been killed because of pine bark beetles have brown needles in this picture. Less pine trees in this area may have an impact on weather and air quality.
Carlye Calvin/UCAR