Despite the destabilizing effects of his economic and foreign policies, as well as a major election loss, President Erdogan shows no sign of interest in course correction.

A global surge in avian flu outbreaks in birds and some mammals is worrying poultry farmers, scientists, and health experts. The trend is provoking questions about the future of the disease and globa…

[Voters in Africa’s most populous country and largest economy cast ballots for a new leader in the Feb. 25 Nigerian general elections. Here are answers to some essential questions about the vote]

See how six countries are faring amid efforts to protect 30 percent of the planet’s land and waters by 2030, and what will be saved if they succeed.