The main objectives of this study were to develop a method for the measurement of cocaine derivatives in oral fluid by coupling a probe electrospray ionization (PESI) source with quadrupole ...

The emissions of leading fossil-fuel and cement producers have been systematically linked to particular heatwaves. Three scientists discuss the methodology behind the result and its potential impact ...

In July, the administration of US President Donald Trump announced formally that the US Environmental Protection Agency (EPA) would seek to overturn its 2009 ruling that greenhouse-gas emissions ...