SAN FRANCISCO, United States (AFP) — Google is taking back Nest, the smart home unit of parent firm Alphabet, as part of an effort by the tech giant to battle rivals like Amazon and its Alexa digital assistant. Nest Labs, known for its smart home Wi-Fi  thermostat, was acquired by Google in 2014 for $3.2 billion and later became an independent Alphabet “other bets” unit dedicated to connected devices. Wednesday’s announcement brings Google and Nest back together […]