This computer illustration depicts the density of space junk around Earth in low-Earth orbit. (Image: © ESA)

should we be worried about 5G?

5G is being rolled out literally across the world – with thousands of satellites launched into the ionosphere to blanket the planet with millimetre microwaves. What are the environmental and public health impacts of this technology? Who is regulating it, and who stands to benefit? Do we really need 5G?