Quantum Computing Breakthrough
Researchers at the University of Sydney have discovered a way to get a 300 qubit system to maintain an observable quantum state. That's 300 beryllium ions arranged in a flat plane. As far as I'm aware, the largest structure they could build without losing quantum interactions was 15 qubits.
A 300 qubit structure has the potential to be 10 to the 18 times more powerful than existing supercomputers. Or, as they say in the article, a standard model computer the size of the entire universe.