Tree rings: Volcano in Iceland chilled summer in Alaska
The Inuit tell stories about the year that summer never arrived. Tree rings from 1783 confirm that the Laki volcano in Iceland caused the cooldown.
Feb. 3, 2021 • ~7 min
Tree rings chart more than 1,000 years of solar activity
Researchers have reconstructed the sun's activity going back to the year 969 by looking at the carbon in tree rings.
Jan. 25, 2021 • ~7 min
Tool predicts which forests will regrow on their own
A new mapping tool will help forest managers figure out where forests will regenerate on their own—and where they need assistance.
Dec. 28, 2020 • ~5 min
That dried-out Christmas tree is a fire hazard
Christmas tree disposal can prevent fire hazards and potentially benefit the environment. Here are some expert tips.
Dec. 28, 2020 • ~6 min
Climate change could make trees lose leaves early
While some scientists have predicted that trees will lose their leaves later as climate change continues, new research finds the opposite.
Nov. 30, 2020 • ~8 min
Is that mulch really cypress? Maybe some of it
People buy cypress mulch for rot resistance and other qualities, but new research finds that the label on the bag may be a lie.
Nov. 2, 2020 • ~6 min
New wasp may be a parasite of a parasite
Researchers have discovered a new species of wasp with a role in an insect horror story playing out on the stems and leaves of oak trees.
Oct. 28, 2020 • ~10 min
AI counts 1.8 billion trees in Sahara Desert
There are more trees in the West African Sahara Desert that you might think, according to a study that used artificial intelligence and satellite imagery.
Oct. 22, 2020 • ~6 min
Multiple droughts can be a mixed bag for forests
When multiple droughts build on each other, they affect forests differently than one drought alone. Researchers are beginning to understand how and why.
Oct. 14, 2020 • ~6 min
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