A new study reveals all five fundamental nucleobases – the molecular “letters” of life – have been detected in samples from ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and educator with over 35 years of diverse ...

David Kindness is a Certified Public Accountant (CPA) and an expert in the fields of financial accounting, corporate and individual tax planning and preparation, and investing and retirement planning.

This database originally covered cases from 1982 to 2012 and has since been updated and expanded numerous times. For analysis and context on this data—including how we built the database, and a change ...