The European Union has launched a €35 million (US$39.4 million) tender to fund research and coordination on, among other things, detecting rogue efforts to alter the Earth’s atmosphere by blocking out the sun. The EU’s Horizon Europe arm, which funds research and innovation, launched the call for projects on Tuesday as part of an early stage effort to coordinate action on so-called Solar Radiation Modification, a nascent and controversial technology that could be used to cool the planet should...