We’re taking a pause in publications this week due to the terrible crisis unfolding in Ukraine. Many of our friends and colleagues have close ties to Ukraine, and our hearts go out to the millions of ordinary and innocent people whose lives and futures have been completely upended by the Russian invasion. There are many ways to donate to and aid the people of Ukraine, and we encourage readers who can to do so. While it is difficult to imagine how these might be achieved, we hope for the safety of the Ukrainian people, and we hope for peace.