Many students of climate change argue that, although the artificialrelease of greenhouse gases such as carbon dioxide works to raise the global temperature, particulate pollution should, by promoting cloud cover and thus reflecting solar energy back into space, have a compensating cooling effect.
The regime the team has devised is a combination of a daily pill made of desogestrel (an artificial form of progesterone) and a slow-release testosterone pellet that is placed under the user's skin.