Facebook's Mark Zuckerberg joins Bill Gates and others with $25 million pledge

Mark Zuckerberg and his wife Priscilla Chan just pledged $25 million.

Cupcakes, the cost of digital projectors and more numbers we're watching today.

Healthcare workers must get the transmission rate below the number one.

Snapchat, Ebola and more numbers we're watching and reading today.

CDC steps up outreach to frontline health workers with precautions to tackle Ebola.

The CDC's on-the-ground work involves risk, problem solving, and money management.

New Ebola screenings and waiting for Fed minutes: Here's what we're reading today.

IMF, LED, CDC and IBM: All the acronyms we're reading about Tuesday.

'Geeky problem solvers' who keep tabs on people potentially exposed to Ebola.