Science Magazine – September 22, 2023: This illustration depicts a human form out of a collage of heatmaps (red and blue squares).

Peak solar activity is arriving sooner than expected, reaching levels not seen in 20 years

The Sun’s flare-ups can threaten satellites and electric grids, highlighting need for better forecasts

Quantum algorithm offers faster way to hack internet encryption

Scheme to factor giant numbers could be more efficient than 30-year-old Shor’s algorithm