Across
- 3. Chemical element with symbol W
- 5. Mixture of mercury with another metal
- 7. Mathematical constant approximately equal to 1.618
- 9. Fine parchment traditionally made from calf skin
- 11. Map projection that makes Greenland look ridiculously large
- 12. Device used to help remember something
Down
- 1. Longest river entirely within Vietnam
- 2. Tree whose leaves are famously eaten by koalas
- 4. Sentence containing every letter of the alphabet
- 6. Study of mushrooms
- 8. Variant of an element with different neutron count
- 10. Fourteen-line poem