Writing shaped our world and the rise of human knowledge, from the trading of goods to tales of ancient goddesses and kings. Follow the evolution of the written word, from 4,000-year-old carvings in an Egyptian turquoise mine to modern-day alphabets.
We can now edit the human genome with a tool called CRISPR. But how far should we go?
Can bringing predators—and fear—back into an ecosystem help restore its natural balance?
Goddess, demon, house pet? What does science say about the human relationship with cats?
