Multiple sirens have been heard in and around Kansas City Tuesday warning of tornadoes, with one already confirmed on the edge of the city. CBS News correspondent Ian Lee reports.

Dive into the mysterious depths of the ocean where not even the mighty killer whale rules supreme! Ever wondered if there’s any creature brave enough to challenge the apex predator of the seas?

"I want to be building things like Dash that sort of make Dropbox 1.0 look like a footnote," Houston told Fortune.