A police officer's duty to intervene when a colleague uses excessive force is at the core of the prosecution of three men charged as Derek Chauvin's accomplices in the murder of George Floyd. Former ...

The Department of Biology at Saint Louis University offers a Leica SP8 confocal microscope with resonant scanner for academic and commercial use. Live-cell imaging can be performed using a stage ...

For about 30 seconds, a bystander records a video as three officers punch, strike and knee a man while struggling to arrest him outside an Arkansas convenience store. The video ends after one of the ...