Understanding tremors through tree rings

When trying to make sense of past earthquakes, researchers typically turn to the geological record. However, there may be clues to understanding old quakes in the biological record as well—in tree rings, for example. As ...

Europeans in the Americas 1,000 years ago

Columbus was not the first European to reach the Americas. The Vikings got there centuries before, although exactly when has remained unclear. Here, an international team of scientists show that Europeans were already active ...

Why trees grow at night

Trees form new cells by using the carbohydrates they produce through photosynthesis. However, it is not primarily the availability of carbohydrates that limits growth, but the water tension in the tree, the so-called water ...

Research identifies climate-change refugia in dry-forest region

Several indicators point to the adverse impacts of climate change on the planet's vegetation, but a little-known positive fact is the existence of climate-change refugia in which trees are far less affected by the gradual ...

Limited value of tree plantations for biodiversity conservation

In light of declining natural forests, tree plantations may seem like a good way to replace forest habitats. But what are the possible benefits of these plantations for biological diversity? A team of researchers led by led ...

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