The FDA has defended its decision to issue a refusal-to-file (RTF) letter for Moderna's new mRNA-based influenza vaccine, claiming the company had not used an appropriate control group in its pivotal ...

In a major shift in its hardware strategy, OpenAI launched GPT-5.3-Codex-Spark, its first production AI model deployed on ...

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Mary Hall is a editor for Investopedia's Advisor Insights, in addition to being the editor of several books and doctoral papers. Mary received her bachelor's in English from Kent State University with ...

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 ...

Eustress, or positive stress, can motivate individuals, aid in achieving goals, and contribute to overall well-being and a sense of fulfillment. Unlike distress, which arises from negative experiences ...