Black smoke from a chimney https://www.rawpixel.com/image/2255458/free-photo-image-roof-pollution-houseView licenseBlack businessman talking on the phone https://www.rawpixel.com/image/1204877/business-person-calling-the-phoneView licenseCromer, United Kingdom. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298896/free-photo-image-adventure-aircraft-airplaneFree Image from public domain licenseBlack businessman talking on the phone https://www.rawpixel.com/image/1204886/business-person-calling-the-phoneView license