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Twitter has joined the likes of Facebook Apple and other tech giants in offering two-factor authentication. Should we call it "the death of the password?" Maybe.  Also in tech desctruction, iPhone users have spent billions repairing their damaged and cracked screens since 2007. Repair costs aren't getting any cheaper either. Better protect your screens carefully. Plus, President Barack Obama spoke about drones today. Just how big is the domestic drone industry and will it be a boon or bust for jobs?

A deal sweetener from SoftBank. Japan's markets plunge. And is it more money, more problems for professional athletes?

After an electrifying run over the past several weeks, stock markets around the world are down this morning. Ford Motor Company is calling it quits in Australia. The U.S. automaker says it will shut down its two factories down under and halt production in 2016. And for pro athletes, sometimes the biggest challenge is financial success and the family pressure that comes with it.

Scientists may be fretting over global climate change or when the next asteroid will strike Earth's surface, and the threat of mass extinction such events would bring. But a catastrophic event doesn't necessarily spell the end for civilization. In fact, Annalee Newitz, author of the new book Scatter, Adapt and Remember, says that with the right mindset and proper preparation, humans have the capacity to thrive in a post-mass extinction world.

How much data are you leaking? Lots of business are selling your data to others to help them all track you. How can you opt out? We find out. In the business of sports, golf and basketball and making rules changes, like raising the hoop to make it harder to dunk. What's the economic cost? Also, we take a trip to the tax-shelter island otherwise known as Manhattan to tell you about how some of Apple's untaxable billions aren't actually overseas.