After narrowly escaping being scrapped in defense cuts, the venerable A-10 Thunderbolt will now fly in the fight against ISIS.
Ebola cases in West Africa have increased to 5,800 and the virus has killed more than 2,800 people so far.
British journalist John Cantlie appears to narrate the second video in the Islamic State group's propaganda "lecture series."
The U.S. and several Arab allies unleashed bombs and cruise missiles in Syria early Tuesday, the Pentagon confirmed.
The Department of Treasury issued new rules that make it harder for U.S. corporations to avoid taxes by moving their headquarters abroad.
The RE100 campaign coincides with a private-sector push to get governments to tax carbon dioxide emissions that cause climate change.
About 100 Americans have joined Islamic State group abroad, the Obama administration announced on Monday.