Summary:

- The article discusses the development of a sun shield technology that could help mitigate the effects of climate change by reflecting a portion of the sun's energy back into space.
- The sun shield is a thin, lightweight material that would be deployed in space and positioned between the Earth and the sun, reducing the amount of solar radiation reaching the planet's surface.
- The technology is being developed by researchers at Carnegie Mellon University and has the potential to provide a complementary approach to other climate change mitigation strategies, such as reducing greenhouse gas emissions.