1 Scientists use X-ray diffraction to image whole, hydrated cells in their natural state for the first time
3 Study of grinding stones suggests adaption to ice age may have led to birth of agriculture in China
2 Nanotechnology could help fight diabetes: Injectable nanogel can monitor blood-sugar levels, secrete insulin when needed
1 40-year-old prediction confirmed: First direct proof of Hofstadter butterfly fractal observed in moire superlattices
3 Secret of efficient photosynthesis: Purple bacteria's light-harvesting prowess lies in highly symmetrical molecules
