With Qatar's liquefied natural gas still offline, U.S. companies see an opening and are bringing in new investments.

Drug overdose deaths are plummeting in the U.S. in ways never seen before. Experts worry new, toxic "synthetic" street drugs could derail the recovery.

Firms like Function Health and Oura market regular blood tests to people wanting to take their health into their own hands. The process often raises more questions for patients than it can answer.