Walmart-backed Flipkart is planning to launch Flipkart for Earth, a premium line focussed on environmentally friendly products, according to people in the know.The company has started onboarding brands offering healthier, toxin-free, and sustainable products across beauty and personal care (BPC), snacks and beverages, home decor, fashion, appliances, and other categories, people familiar with the development told ET.It is unclear whether the