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Print edition: February 2000

Features

Silicon germanium makes its mark

Physics in Action

Novel crystals from pressured metals

Experimental attosecond science makes its debut

Simplicity works for superfluid helium

Pulsar may be strange star

Post-deadline

Neutrons caught in trap

Revealing the cat in the box

Stonehenge may have predicted lunar eclipses

News & Analysis

Debut for electron-laser surgery

Reversal of fortunes in UK

Literate physicist gets taste for fiction

Public seeks new dialogue

Neutrino factory gathers momentum

Secret cities seek longer-term support

Physics takes centre stage

From low temperatures to high profits

PhD students prefer life without science

Dennis Sciama

Neutrino work wins Wolf prize

US industry raises R&D spend

Unknown story makes headline

Row over test-ban evidence

Forum

Facing up to ethical challenges

Feedback

Recalling Britain's key nuclear role

An index of risk

Reviews

High-water mark for H2O

Carl Sagan: the man revealed

The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography, Simon Singh

Carl Sagan: A Life, Keay Davidson

Carl Sagan: A Life in the Cosmos, William Poundstone

H2O: A Biography of Water, Philip Ball