Sustainable startups can leverage new technologies such as artificial intelligence (AI), blockchain, or 3D printing in several ways to create more sustainable products or services. Here are some examples:

1. AI can be used to optimize resource use, reduce waste, and improve supply chain efficiency. For example, AI-powered energy management systems can help businesses reduce their energy consumption and greenhouse gas emissions.
2. Blockchain can be used to create transparent and secure supply chains, which can help reduce environmental and social risks in global supply chains. For example, a startup could use blockchain to track the origin of raw materials and ensure they are sourced sustainably.
3. 3D printing can be used to reduce waste and enable localized production. For example, a startup could use 3D printing to produce products on-demand and closer to the point of consumption, reducing the need for transportation and the associated emissions.
4. Smart sensors can be used to monitor and optimize resource use, such as water and energy consumption. For example, a startup could use smart sensors to optimize irrigation in agriculture or reduce energy consumption in buildings.
5. Robotics can be used to automate resource-intensive processes and reduce waste. For example, a startup could use robotics to sort and recycle waste more efficiently, reducing the amount of waste that ends up in landfills.

Overall, sustainable startups can leverage new technologies to create more sustainable products or services by optimizing resource use, reducing waste, improving transparency, and creating new business models that enable more sustainable consumption patterns.