Even muzzled, Martin Shkreli still annoys lawmakers
Former pharmaceutical CEO calls lawmakers "imbeciles" and declined to answer questions at hearing on drug price hikes; later conducted web conference
Muzzled by lawyer, Martin Shkreli to get DC earful
Congress may not get answers Thursday about his 5,000 percent drug price hike, but he sure talked on Wednesday
Regulator sounds alarm over deaths at coal mines
Three fatalities in 2016's first three weeks spark safety concerns over cost-cutting amid the industry's collapse
Yahoo to cut jobs,consider strategic alternatives
Internet company reports a hefty decline in quarterly revenue as it loses more ground to Google and Facebook
Can genetically modified mosquitoes snuff out Zika?
As companies race to create vaccines, Brazil is already testing a different way to fight the disease, and Florida may follow
U.S. economic growth slowed in the fourth quarter
Consumers curb spending and businesses reduce capital expenditures in the face of slowing markets overseas
Government: Theranos lab a danger to patient health
Blood-testing startup says it's working to fix safety problems identified by the top federal overseer of clinical labs
Feds claim false advertising by DeVry University
For-profit educator accused of making misleading claims about jobs and income for graduates, but vows to defend itself
Fed stands pat on interest rates
Central bank opts to hold the line on borrowing costs, saying that growth faltered in late 2015
Stocks decline as Fed confirms economic slowdown
After fluctuating, Wall Street caves after U.S. central bank holds rates pat and corporate earnings leave little to cheer about
Oprah loses 26 pounds, Weight Watchers gains 20 percent
Weight Watchers stock surges as media mogul takes to Twitter to pitch her success with its program
U.S. stocks rally as crude's rise offers some relief
In earnings news, 3M and specialty glass maker Corning rose after reporting results that were better than analysts were expecting
Another big merger could skirt taxman
Deal between Johnson Controls and Tyco offers another illustration of a U.S. firm using a corporate inversion to cut its tax bill
What's behind crazy markets? Fed's "mixed message"
U.S. central bank is in a bind as it tightens monetary policy even as the global economy slows, BlackRock bond guru says
Safety regulators probe 13 hoverboard companies
And Amazon is offering full refunds to consumers who purchased the scooters, now linked to 40 fires in 19 states