[cmutel]

The following open access publications give a broad overview of NETs:

Part 1: Research landscape and synthesis: https://iopscience.iop.org/article/10.1088/1748-9326/aabf9b

Part 2: Costs, potentials and side effects: https://iopscience.iop.org/article/10.1088/1748-9326/aabf9f

Part 3: Innovation and upscaling: https://iopscience.iop.org/article/10.1088/1748-9326/aabff4

[aoner]

If you are interested in negative emissions this is the best review paper I've come across so far that covers all various negative emission technologies, from trees and oceans to bio-energy with carbon capture storage (BECSS) and direct air capture (DAC). Highly recommended.