10Be and 26Al concentrations in river sand reveal an increase in erosion rate in the Brazilian Highlands consistent with the Mid-Pleistocene Transition, a major climatic shift that occurred about 1 million years ago.
Cosmic rays
Posted inNews
A Sugar Coating for Arrokoth
A Kuiper Belt object might contain ribose and glucose on its surface—the same elements that could have seeded life on Earth.
Posted inNews
Did a Cosmic Explosion Make the Ionosphere Dance?
Researchers have linked a 2022 gamma ray burst to a disturbance in the upper atmosphere, but proving the connection highlights the problems with this kind of measurement.
Posted inFeatures
Rita de Cássia dos Anjos: Never Settle for Things as They Are
The award-winning astrophysicist is using her visibility to call attention to inequalities in the Brazilian science community.
Posted inEditors' Highlights
Life on Mars? Estimating Radiation Risks for Martian Astronauts
New research suggests that to minimize radiation risk for human exploration of Mars, astronauts will need to dig deep for safety.
Posted inEditors' Vox
High-Definition Imaging of the Subsurface with Cosmic Ray Muons
A new book describes muography, an imaging technique that can be used to visualize the internal density composition of geological structures.
Posted inNews
Taking Stock of Cosmic Rays in the Solar System
Scientists seek to understand the elusive properties of stellar and galactic cosmic rays before searching for life on exoplanets.
Posted inNews
Are Cosmic Rays a Key to Forecasting Volcanic Eruptions?
A combination of relativistic particles and artificial intelligence may provide a new way to forecast when a volcano could erupt.
Posted inNews
An Underwater Telescope to Study Sky and Sea
To peer into the farthest reaches of the universe, you must first build a giant underwater telescope.
Posted inResearch Spotlights
Cosmic Ray Neutrons Reveal Mountain Snowpacks
The first application of aboveground neutron sensing to evaluate alpine snowpacks indicates that this method can reliably detect average snow depth and water content across intermediate distances.