Scientists say the rain forest is approaching a critical tipping point at which the damage is irreversible.

The main battle tanks that the United States and Germany have agreed to provide Ukraine will help its forces punch through Russian fortifications and retake lost territory.

Experts have warned that time is running out to avoid climate catastrophe. Will the global climate conference spark action?

President Biden has vowed to diversify the top ranks of government agencies. The small and shrinking number of senior Black diplomats, in particular, could undermine U.S. foreign policy goals.