Quantcast
issue
Read articles, including Science News stories written for ages 9-14, on the SNK website.
PLUMBING TROUBLE

In a colored microscopic cross section of frozen wood, blue indicates where water had been flowing properly through a tree’s plumbing. Empty water channels reveal ones that have succumbed to air bubbles, an effect of drought that can kill a tree. Credit: Yuzou Sano/Hokkaido University

Follow Us
blogs & columns
multimedia
Not to miss
bookshelf