Feeling dizzy or lightheaded when you stand up may be a risk factor for stroke and dementia years down the road, a new study reports.

The Chinese stock market has been crushed this year, but WisdomTree Director of Research Jeremy Schwartz says there’s a buying opportunity for investors, if they focus on tech.

CNN’s Paul R. La Monica tells Christine Romans what going private could mean for Tesla, and how being a publicly-traded company has boosted its value.

Thousands of Chinese citizens had their savings wiped out after hundreds of online lending platforms imploded. CNN’s Matt Rivers speaks to some of the victims who lost their money to companies they say were promoted by the government.

Even as many performers focus on psychological well-being in their work, the grueling annual event can take a toll.

Spoofed videos known as deepfakes are increasingly appearing on social media, but tech companies are still trying to figure out how to handle them. CNN’s Laurie Segall explains why these fake videos are so hard to spot.