FRANKFURT AM MAIN, Germany (AFP) — Shares in German chemicals and pharmaceuticals giant Bayer plunged as markets opened Wednesday, after a second US jury ruled that blockbuster pesticide Roundup — made by recently-acquired Monsanto — causes cancer. The Leverkusen-based group’s stock toppled 11.6 percent to 61.60 euros ($69.88) at around 09:40 am in Frankfurt (0840 GMT), making it the worst performer on the DAX index of blue-chip German shares. On Tuesday a California jury […]