Tiny sound waves inside the Sun unmask evidence of systematic changes in the solar activity cycle over the last 40 years – with implications for predicting space weather.

Even the most modern random number generators do not produce perfectly random numbers, which can be a problem for cryptographic applications. 

ETH Zurich researchers use entangled superconducting qubits and a so-called Bell-test to amplify such imperfect randomness using quantum physics. 

Their technology could become a key foundation for secure encryption and digital security. 

Based on a 20-year field nitrogen addition experiment, this study demonstrates that long-term high nitrogen deposition does not reduce belowground carbon allocation in tropical forest plants; rather, it induces a physiological adaptation—upregulation of root exudation—to actively mobilize soil phosphorus, thereby sustaining productivity and offering a key mechanistic explanation for the persistence of tropical forest carbon sinks under chronic nitrogen enrichment.