How can we combat climate warming? Some scientists say geoengineeringinterfering with Earth's systems to counteract climate changeis the answer. Explore ideas such as reforestation, space mirrors, and carbon capture, and learn about the pros and cons of these controversial technologies.

The term 'carbon farming' is used to describe a suite of crops and agricultural practices that sequester carbon in the soil. If widely implemented, these practices have the capacity to sequester hundreds of billions of tons of carbon from the atmosphere in the coming decades. Combined with a massive global reduction in fossil fuel emissions, it can bring us back from the brink of disaster and return our atmosphere to the 'magic number' of 350 parts...

We now possess the technology to capture carbon emissions as they are released into the atmosphere. After capture, the gas is trapped within facilities hidden far underground. As promising as this process sounds, can it really compete with the often cheaper, low-carbon technologies currently available, and is the practice really safe and eco-friendly? Furthermore, will governments and societies embrace this controversial method and integrate it fully...