From the Wires

Office Depot shares up 20%

Forbes: News that the retailer will close 400 stores by 2016 sent Office Depot shares soaring.

World facing polio health emergency

BBC: The World Health Organization declared the spread of polio as an international public health emergency.

Coca-Cola drops flame retardant ingredient in sports drink

TIME: The company will no longer use brominated vegetable oil, which has been linked to a flame retardant, in its Powerade sports drink.

Study: Young blood rejuvenates older animals

CBS: Older mice who were given blood and blood proteins from young mice showed improved muscle and brain function.

U.S. added 288,000 jobs in April

WSJ: The unemployment rate in America dropped to 6.3%, the lowest since September 2008.

CDC: Five things cause two-thirds of U.S. deaths

CNN: Five conditions cause nearly 900,000 deaths per year in America: heart disease, cancer, lung disease, stroke and unintentional injuries, like car accidents or medication overdoses.

Dems rally over GOP's block of minimum wage bill

CNN: Senate Republicans blocked a measure that would raise the federal minimum wage to $10.10 an hour.

Facebook reveals anonymous logins

Forbes: Anonymous Logins will allow users to hold back from sharing their personal information with ad networks.

MIT undergrads to get bitcoins in the fall

TIME: All 4,528 undergraduates will receive $100 in bitcoin to spend with the goal of creating a functioning "cryptocurrency ecosystem."

WHO: Antibiotic resistance now 'global threat'

BBC: The World Health Organization poses resistance to antibiotics as a "major global threat" to public health.

U.S. consumer confidence dipped in April

Reuters: The Conference Board said its index of consumer attitudes dipped to 82.3, the second-highest reading since January 2008.

Stop using Microsoft IE until bug is fixed

CNET: The U.S Computer Emergency Readiness Team warns people to stop using Internet Explorer until Microsoft fixes the bug.

Pfizer bids $100B deal for AstraZeneca

Reuters: The U.S. drugmaker hopes to takeover Britain's AstraZeneca Plc.