Determining fish age using inner ear structures

Biologists in Japan have identified four distinct zones in the otolith, a calcium carbonate structure in the inner ear, which can be used to determine age in fish.

Trees reveal the evolution of environmental pollution

In an article published in the journal Environmental Pollution, Brazilian researchers have showed that tree species Tipuana tipu have been successfully employed as a marker of atmospheric pollution by heavy metal and other ...

Tree rings on Hawai'i could hold new knowledge about El Nino

Trees can record centuries of history in their rings – changes in rainfall and temperatures, even evidence of fires sweeping through a region or the climatic impacts of volcanic eruptions. Annual rings are common in trees ...

Increase in CO2 has not stimulated growth of tropical trees

Since the start of the industrial revolution in 1850, atmospheric CO2 levels have increased by about 40%. However, contrary to expectations, the growth of tropical trees has not increased as a result. The prediction that ...

Cedar tree rings archive Amazon rainfall data

University of Leeds-led research has used tree rings from eight cedar trees in Bolivia to unlock a 100-year history of rainfall across the Amazon basin, which contains the world's largest river system.

Tree-ring science takes on the modern age

Whether it's learning how forests respond to environmental change or answering questions about the history of ancient cultures, trees continue to be a solid source of information for many kinds of researchers.

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