Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.