Governments spend a lot of money to contain violence. [[tweetable]]In 2015, some $1.7 trillion was spent on defense by governments worldwide[[/tweetable]] . While the primary responsibility for…

Ede Ijjasz-Vasquez, Bernard Harborne |

Globally 2.9 million people died from household air pollution in 2015, caused by cooking over foul, smoky fires from solid fuels such as wood, charcoal, coal, animal dung, and agricultural crop…

Ernesto Sanchez-Triana, Bjorn Klavdy Larsen |