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Ask Dr. Universe: Why do leaves change colors?
September 27, 2016

Dr.-Universe-with-leavesPULLMAN, Wash. – Ever since I was a kitten, I’ve loved picking up big maple leaves in the fall. I’d take them home, put them under a piece of paper and rub the side of a crayon over the top. It makes a great print of the leaf.

Ask Dr. Universe: How do leaves make themselves?
February 2, 2016

Dr-Universe-230WENATCHEE, Wash. – Last fall, my friend Lee Kalcsits and I went exploring in the apple orchards of Wenatchee. The apples were ripe and the leaves were changing from green to gold. We plucked a few leaves and took them back to his lab.

Photos highlight hopes of another week of fall colors
October 25, 2013

Photos by Shelly Hanks, WSU Photo Services

PULLMAN, Wash. – The weather forecast calls for sunshine – and bright fall colors – to continue through most of next week, though the daytime high temperatures will be in the 40s and 50s rather than the 60s.

Fall takes last fling, offers spectacular color
November 15, 2010

PULLMAN – Winter tempertatures and darker days are creeping in, but nature has  allowed fall a last spectacular fling, as trees and bushes across the WSU Pullman campus display a brilliant palette of colors.

 

Scientifically, the shorter daytime hours and cooler temperatures create a complex chemical reaction in leaves and plants, causing the quiet green colors of summer foliage to transformed into reds, oranges, golds and browns before the leaves fall off the trees.

 

Here is a Soundslides file providing a few glimpses of fall colors on the WSU Pullman campus over the past two weeks, courtesy … » More …