Mars is inhospitable to life. The average daytime temperature is -65°C, dropping to as low as -120°C at night. The atmosphere is only 1% of Earth’s, leaving the surface exposed to harmful ultraviolet ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

Learn the benefits and risks of options and how to start trading options Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Samantha (Sam) Silberstein, CFP®, CSLP®, ...