![Sustainability | Free Full-Text | A Comparative Analysis of the Environmental Benefits of Drone-Based Delivery Services in Urban and Rural Areas Sustainability | Free Full-Text | A Comparative Analysis of the Environmental Benefits of Drone-Based Delivery Services in Urban and Rural Areas](https://pub.mdpi-res.com/sustainability/sustainability-10-00888/article_deploy/html/images/sustainability-10-00888-g003.png?1569949346)
Sustainability | Free Full-Text | A Comparative Analysis of the Environmental Benefits of Drone-Based Delivery Services in Urban and Rural Areas
![Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace](https://www.unmannedairspace.info/wp-content/uploads/2019/11/VVA2-300x166.png)
Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace
![Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace](https://www.unmannedairspace.info/wp-content/uploads/2019/11/VVA1.png)
Comparing the cost-effectiveness of drones v ground vehicles for medical, food and parcel deliveries - Unmanned airspace
![Drones | Free Full-Text | Drone-Based Identification and Monitoring of Two Invasive Alien Plant Species in Open Sand Grasslands by Six RGB Vegetation Indices Drones | Free Full-Text | Drone-Based Identification and Monitoring of Two Invasive Alien Plant Species in Open Sand Grasslands by Six RGB Vegetation Indices](https://www.mdpi.com/drones/drones-07-00207/article_deploy/html/images/drones-07-00207-g001.png)