The U.K.'s new 'Bio-Bus' carries 40 people and is powered by biomethane, produced by human and food waste.
Flexible device adheres to upper arm and generates a weak electrical current from perspiration. Continue reading â†’
Sea hares fire an inky mucus-like substance that confuses would-be attackers. ->
Scientists are developing a desk-top machine that "plays" plug-in cartridges of channels and membranes lined with human cells. ->