1. Finding ice on Mars
2. Growing a new organ from a patient’s own stem cells
3. Finding another building block of life in our galaxy
4. Curing HIV in Germany
5. Breaking the petaflop barrier
6. Sequencing entire genome of a cancer patient, including tumor
7. Building loudspeakers from carbon nanotubes
8. Marking greenhouse gas levels — 800,000-year high
9. Turning water into fuel
10. Troubleshooting stem cell therapy