A global battle between the U.S. government and Chinese tech company Huawei over allegations that it is a cybersecurity risk overshadowed the opening Monday of the world’s biggest mobile industry trade fair. Huawei has an outsize presence at MWC Barcelona, from its displays in three separate show halls down to its red sponsorship logo adorning…

Faced with seesawing commodity prices and the pressure to be more efficient and environmentally friendly, farmer Jamie Butler is trying out a new worker on his 450-acre farm in England’s Hampshire countryside. Methodically inspecting Butler’s winter wheat crop for weeds and pests, the laborer doesn’t complain or even break a sweat. That’s because it’s a…