Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

It can be dangerous to go without sleeping, even for a day. Longer-term sleep deprivation can cause cognitive impairment, hallucinations, and other side effects. The longest recorded time without ...

The new Tesla Model Y Standard and Model 3 Standard are $5,000 and $5,500 more affordable than the rest of the lineup, respectively. Tesla cut a laundry list of features from the cars to make them ...

Tesla's newly rolled out Model Y Standard was supposed to be something incredibly important for the automaker: a cheap entry into the electric crossover market. Instead, what consumers (and Tesla's ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

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