From Science's Online Daily News Site

摘要

Bugs build batteries. Green technology just went viral. Researchers have used viruses to create rechargeable batteries similar to those found in hybrid cars and laptops. Until now, batteries like these were made in chemically intensive, high-heat processes. The results could herald a low-energy, environmentally friendly alternative.rnOldest stone blades uncovered. Paleo-anthropologists working in Africa have discovered stone blades more than a half-million years old. That pushes the date of the earliest known blades back a remarkable 150,000 years and raises a question: Which human ancestor made them?