Tracks of an Oak Killer California scientists are honing new tools to fight sudden oak death Mysterious Tides Toxic blooms of marine algae are getting worse, and some think we're to blame Lead's Everlasting Legacy Traces of the toxic metal loiter in our homes and bodies, and we don't understand its risks Where Fire Meets the Sea Volcanologists use undersea robots to chart explosive eruptions in the deep ocean The Itsy Bitsy Drummer Complex vibrations can make or break the courtship dances of spiders The New Grass Cycle Entrepreneurs gear up to go green with personal transportation made from bamboo The Spreading Scourge of Dengue Nicaraguan communities unite to halt a virus as scientists decipher its patterns of infection The Strawberry Solution Agroecologists must learn how to grow strawberries without toxic soil fumigants A Robot's Touch Could engineers who like to share take a slice out of the market for robot-assisted surgery? The Sea Longs for Red Devils The elusive Humboldt squid has abandoned a Mexican fishery in need