By 2050, it is estimated 17% of all global carbon emissions will come from the shipping industry. As of now, trucks contribute 161.8 grams of CO2 per ton-mile, whereas airplanes contribute 500 grams per metric ton.
Ground shipping does have a small environmental impact but is considered to be one of the more eco-friendly methods due to fewer routes and fewer emissions.
Even though it may take longer, you'll still receive your order within a week, plus it'll help the planet as it has been proven that sustainable shipping can reduce carbon emissions by up to 60%, as per KPMG's Sustainability Services division.