By analyzing thousands of oak timbers dating from the 4th to 21st centuries, scientists have pinpointed the advent of a forest management practice.

Katherine Kornei
Katherine Kornei is a freelance science journalist covering Earth and space science. Her bylines frequently appear in Eos, Science, and The New York Times. Katherine holds a Ph.D. in astronomy from the University of California, Los Angeles.
A Culinary Silver Lining of Climate Change: More Truffles
The cultivation potential of a popular truffle species will increase in central Europe by 2050, global climate models predict.
Experimentos Revelan Cómo el Carbono del Permafrost se Convierte en Dióxido de Carbono
Muestras de campo provenientes de Alaska muestran cómo la luz solar y el hierro convierten el carbono del permafrost en dióxido de carbono. Los modelos climáticos ignoran este proceso.
Mount Everest Can Sometimes Feel Lower Than K2
Variations in air pressure on the top of Mount Everest affect oxygen availability, changing the perceived elevation of the summit by hundreds of meters.
Waterways Change as Cities Grow Nearby
Using multidecadal data sets, researchers have traced how urbanization affects streamflow across the continental United States.
Tracing the Moisture That Nourishes the World’s Highest Glacier
Using data from weather stations on and around Mount Everest, scientists find that the Khumbu Glacier receives most of its moisture from the Bay of Bengal.
La Geología y la Química Impulsan la Migración Animal en el Serengueti
Trabajo de campo en Tanzania sugiere que la química del suelo—influenciada por el vulcanismo local y la actividad tectónica—podría ayudar a determinar la migración sin precedentes de más de un millón de ñus.
Homes and Other Buildings Abound in Natural Hazard Hot Spots
Researchers mined maps of natural hazards and land use to show that nearly 60% of structures are built in regions at high risk of earthquakes, wildfires, floods, hurricanes, and/or tornadoes.
Agricultura Sustentable Reflejada en Calidad del Agua de Cuba
Las muestras de agua de 25 ríos en el centro de Cuba están dominadas por signos de erosión de las rocas en lugar de la escorrentía de fertilizantes, según muestran investigadores que trabajan en instituciones cubanas y estadounidenses.
Students Learn New Skills with Scientist-in-Training Programs
AGU’s Bright STaRS offers a model for programs to give middle and high school students a taste of what a career in science can offer.