The 25th anniversary meeting of the Shanghai Co-operation Organisation in the Kyrgyz capital may offer a glimmer of hope that international relations do not need to be defined by endless confrontation, writes KENNY COYLE
HOW much is one kilogram? The answer, it turns out, is “about one kilogram…but not quite.” In just a few months, the definition of 1kg will be fundamentally changed, thanks to an international conference of scientists in Paris last November.
Defining 1kg might seem like an abstract philosophical question, but it’s also a practical one. When Marx wrote Das Kapital, he explained “A sugar-loaf being a body, is heavy, and therefore has weight: but we can neither see nor touch this weight” (Chapter 1). To weigh anything requires a system of standards for measurement.
Dignity is important to all humans, argues the Marx Memorial Library and Workers’ School, but it does not come about automatically. In a less than perfect world, dignity can accompany suffering, but the collective dignity of working people is achieved through acting together to change the world.
Nature as well as society works dialectically, asserts the Marx Memorial Library and Workers’ School
Coal-fired stoves in traditional homes are the primary source of extreme levels of air pollution in over-crowded Ulaanbaatar. As more people become climate-displaced, the situation is likely to worsen, write SCIENCE AND SOCIETY
Neutrinos are so abundant that 400 trillion pass through your body every second. ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT explain how scientists are seeking to know more about them



