This school in Kharkiv, Ukraine, was hit by Russian missiles in March. Much of V. N. Karazin Kharkiv National University and other parts of the city have also been demolished. Even as some scientists leave Ukraine for temporary posts elsewhere, people the world over are thinking about how to rebuild science in the country when peace returns. In Russia, meanwhile, scientists are increasingly isolated as their international colleagues weigh showing condemnation and preserving communication. For more on how the war is affecting scientists and science, see page 22 . (Photo by iStock.com/OLeksandr_Kr.)