Nature highlights
Key research and analysis from this week's Nature magazine.
A light touch: Purifying entangled photons
- Scientific literacy: Word ploy
- Vision: Seen shifting
- Stem cell renewal: Wnt at last
- Gamma-ray bursters: Magnetic power sources
- Condensed-matter physics: Spin chiller
- Earth science: Earth's earliest history
- Animal behaviour: Leading question
- Alzheimer's disease: Target Alzheimer's
- Apoptosis: Dance of cell death
