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 ...

A draft assessment of the health of nature in the United States is grim but shot through with bright spots and possibility. By Catrin Einhorn An unusual outbreak of wildfires in city parks gave ...

A major problem in the treatment of addiction is relapse, which is often caused by the powerful and long-lasting memories of the drug experience. Drugs of abuse can hijack or impair specific synaptic ...

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 ...