Biotech: Protein power, without the problems.
Memory holds us together. That's why it's crucial to record the DNA of every species-and to archive the Internet.
Creating super-people may not be such a bad idea, claims a prominent bioethicist.
Absurdly broad stem cell patents are shutting down promising research.
DuPont's energetic chairman is reinventing the nearly 200-year-old chemical company, shifting its emphasis to biology-based materials and electronic displays.
Wireless sensors probe the infrastructure.
The philosophers got it wrong: scientists love new ideas-if they're right.