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Uber rolls out new safety features

Photo: ALASTAIR PIKE/AFP/Getty Images

Uber is rolling out several new safety features and upgrades, including the ability to send text messages to 911 dispatches from within the Uber app, and an option for riders to receive a unique PIN number to verify their driver's identity.

Yes, but: The news comes as the company and rival Lyft continue to face criticism over the safety of their services and how they handle complaints.

Study finds massive Defense Department carbon emissions

In this image, the Pentagon is seen from a distance.
The Pentagon. Photo: Michael Brochstein/SOPA Images/LightRocket via Getty Images

America's Defense Department uses more oil and emits more greenhouse gases than any other institution on Earth, according to a new Brown University study.

The impact: The study found that if the Pentagon, which oversees the U.S. military, were a nation, its emissions would rank it as the world's 55th largest contributor of greenhouse gases. The department has been responsible for some 80% of all U.S. government energy consumption since 2001.