
Saving Troubled Knees
Silk scaffolds, grafts from pigs and green tea extracts might someday help keep injured and vulnerable joints active
Karen Hopkin is a freelance science writer in Somerville, Mass. She holds a doctorate in biochemistry and is a contributor to Scientific American's 60-Second Science podcasts.

Saving Troubled Knees
Silk scaffolds, grafts from pigs and green tea extracts might someday help keep injured and vulnerable joints active

The Risks on the Table
More than half the foods in U.S. supermarkets contain genetically modified ingredients. Have they been proved safe for human consumption?

Making Methuselah
Immortality may not be in the Cards, but Worms, Flies and Pigeons may be able to Teach us a Thing or Two About Living Better Longer

Egg Beaters
Flu vaccine makers look beyond the chicken egg

The Post-Genome Project
Whether The Human Proteome Will Be Successfully Mapped In Three Years Depends On How You Define "Proteome"

The Risks on the Table
More than half the foods in U.S. supermarkets contain genetically modified ingredients. Have they been proved safe for human consumption?

Death to Sperm Mitochondria
A ubiquitin clue to why mitochondrial DNA comes only from Mom

Clock Setting
Lighting up your knees may reset your circadian rhythms