The pro-immigration leader is facing backlash at home and abroad after roughly 60,000 people crossed from Morocco into the Spanish enclave.

It's a bold new experiment and it's already won a prize. Residents in a jam-packed slum, many of them living in one-room tin shacks, help design their apartments in a brand new building.

The FDA is poised to render a decision on Moderna's mRNA-based flu shot, which could be the first of its kind to market. The decision is expected to reverberate throughout the biotech industry.