Scientists have developed an experimental way to study how human embryos implant in a uterus, which may provide new insights into why miscarriages occur and how they can be prevented.

The Russia's Future channel, launched by Navalny's widow Yulia Navalnaya and Reporters Without Borders, began broadcasting Wednesday, on what would have been the late Russian activist's 49th birthday.

Far-Flung Postcards is a weekly series in which NPR's international team shares moments from their lives and work around the world.