Market in free fall, Apple's big bond, and Gap testing fast fashion

Stocks are falling, and falling hard, for the fourth day in a row. Uncertainty out of China, and a general sense of fear in the market seems to be rearing its ugly head. The S&P 500 (^GSPC) was down as much as eight percent from its all-time high set in May. The Dow (^DJI) was down more than 300 points earlier in the trading day as well.

Here are some of the other stories Yahoo Finance is keeping an eye on today.

Apple's record-breaking bond offering
Apple (AAPL) is carrying more than $190 billion of cash on its balance sheet but it's looking for another $1.6 billion in a new bond sale in Australia. That's a record breaker down under.

Gap's fast fashion strategy
Gap (GPS) is eyeing a new strategy to revive slumping sales. The retailer is planning to test a fast fashion model, similar to a strategy popularized by chain H&M.  Gap hopes this will allow it to quickly jump on trends and adapt to changing shopper behavior.

One hour ice cream delivery
Ice cream maker Carvel is famous for its low-tech commercials but now the 80-year-old company is getting a high-tech update. Carvel's owner, Focus Brands, is rolling out a one hour delivery service for all of its companies. That means that in addition to Cookie Puss, you can get products from Cinnabon and Auntie Annie's delivered to your door.

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