Asian News International: Rocks that suck carbon dioxide out of the air could be key in the fight against climate change, say scientists. While addressing a conference at the Royal Society in London this week, Tim Kruger of Oxford Geoengineering, a networking organisation in the UK, said that “enhanced weathering” could in theory remove as much CO2 from the atmosphere as we want – although the practical challenges are enormous. Kruger has two ideas for how to do it. The first involves adding calcium oxide – also known…